The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6010-1 advisory.

  - A website could have obscured the fullscreen notification by using a combination of     <code>window.open</code>, fullscreen requests, <code>window.name</code> assignments, and     <code>setInterval</code> calls. This could have led to user confusion and possible spoofing attacks.
    (CVE-2023-29533)

  - Following a Garbage Collector compaction, weak maps may have been accessed before they were correctly     traced. This resulted in memory corruption and a potentially exploitable crash.  (CVE-2023-29535)

  - An attacker could cause the memory manager to incorrectly free a pointer that addresses attacker-     controlled memory, resulting in an assertion, memory corruption, or a potentially exploitable crash.
    (CVE-2023-29536)

  - Multiple race conditions in the font initialization could have led to memory corruption and execution of     attacker-controlled code.  (CVE-2023-29537)

  - Under specific circumstances a WebExtension may have received a <code>jar:file:///</code> URI instead of a     <code>moz-extension:///</code> URI during a load request. This leaked directory paths on the user's     machine.  (CVE-2023-29538)

  - When handling the filename directive in the Content-Disposition header, the filename would be truncated if     the filename contained a NULL character. This could have led to reflected file download attacks     potentially tricking users to install malware.  (CVE-2023-29539)

  - Using a redirect embedded into <code>sourceMappingUrls</code> could allow for navigation to external     protocol links in sandboxed iframes without <code>allow-top-navigation-to-custom-protocols</code>.
    (CVE-2023-29540)

  - Firefox did not properly handle downloads of files ending in <code>.desktop</code>, which can be     interpreted to run attacker-controlled commands.  This bug only affects Firefox for Linux on certain     Distributions. Other operating systems are unaffected, and Mozilla is unable to enumerate all affected     Linux Distributions.  (CVE-2023-29541)

  - An attacker could have caused memory corruption and a potentially exploitable use-after-free of a pointer     in a global object's debugger vector.  (CVE-2023-29543)

  - If multiple instances of resource exhaustion occurred at the incorrect time, the garbage collector could     have caused memory corruption and a potentially exploitable crash.  (CVE-2023-29544)

  - When a secure cookie existed in the Firefox cookie jar an insecure cookie for the same domain could have     been created, when it should have silently failed.  This could have led to a desynchronization in expected     results when reading from the secure cookie.  (CVE-2023-29547)

  - A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization result.
    (CVE-2023-29548)

  - Under certain circumstances, a call to the <code>bind</code> function may have resulted in the incorrect     realm.  This may have created a vulnerability relating to JavaScript-implemented sandboxes such as SES.
    (CVE-2023-29549)

  - Mozilla developers Randell Jesup, Andrew Osmond, Sebastian Hengst, Andrew McCreight, and the Mozilla     Fuzzing Team reported memory safety bugs present in Firefox 111 and Firefox ESR 102.9. Some of these bugs     showed evidence of memory corruption and we presume that with enough effort some of these could have been     exploited to run arbitrary code.  (CVE-2023-29550)

  - Mozilla developers Randell Jesup, Andrew McCreight, Gabriele Svelto, and the Mozilla Fuzzing Team reported     memory safety bugs present in Firefox 111. Some of these bugs showed evidence of memory corruption and we     presume that with enough effort some of these could have been exploited to run arbitrary code.
    (CVE-2023-29551)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 36 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-50f9eb7aca advisory.

  - There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode()     function and loop through to free best.bw and assign best = trial pointer. The second loop will then     return 0 because of an Out of memory error in VP8 encoder, the pointer is still assigned to trial and the     AddressSanitizer will attempt a double free. (CVE-2023-1999)

  - An attacker could have caused an out of bounds memory access using WebGL APIs, leading to memory     corruption and a potentially exploitable crash. *This bug only affects Firefox and Thunderbird for macOS.
    Other operating systems are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10,     and Thunderbird < 102.10. (CVE-2023-29531)

  - A local attacker can trick the Mozilla Maintenance Service into applying an unsigned update file by     pointing the service at an update file on a malicious SMB server. The update file can be replaced after     the signature check, before the use, because the write-lock requested by the service does not work on a     SMB server. *Note: This attack requires local system access and only affects Windows. Other operating     systems are not affected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird     < 102.10. (CVE-2023-29532)

  - A website could have obscured the fullscreen notification by using a combination of     <code>window.open</code>, fullscreen requests, <code>window.name</code> assignments, and     <code>setInterval</code> calls. This could have led to user confusion and possible spoofing attacks. This     vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android <     112, and Thunderbird < 102.10. (CVE-2023-29533)

  - Different techniques existed to obscure the fullscreen notification in Firefox and Focus for Android.
    These could have led to potential user confusion and spoofing attacks. *This bug only affects Firefox and     Focus for Android. Other versions of Firefox are unaffected.* This vulnerability affects Firefox for     Android < 112 and Focus for Android < 112. (CVE-2023-29534)

  - Following a Garbage Collector compaction, weak maps may have been accessed before they were correctly     traced. This resulted in memory corruption and a potentially exploitable crash. This vulnerability affects     Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird <     102.10. (CVE-2023-29535)

  - An attacker could cause the memory manager to incorrectly free a pointer that addresses attacker-     controlled memory, resulting in an assertion, memory corruption, or a potentially exploitable crash. This     vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android <     112, and Thunderbird < 102.10. (CVE-2023-29536)

  - Multiple race conditions in the font initialization could have led to memory corruption and execution of     attacker-controlled code. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus     for Android < 112. (CVE-2023-29537)

  - Under specific circumstances a WebExtension may have received a <code>jar:file:///</code> URI instead of a     <code>moz-extension:///</code> URI during a load request. This leaked directory paths on the user's     machine. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.
    (CVE-2023-29538)

  - When handling the filename directive in the Content-Disposition header, the filename would be truncated if     the filename contained a NULL character. This could have led to reflected file download attacks     potentially tricking users to install malware. This vulnerability affects Firefox < 112, Focus for Android     < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10. (CVE-2023-29539)

  - Using a redirect embedded into <code>sourceMappingUrls</code> could allow for navigation to external     protocol links in sandboxed iframes without <code>allow-top-navigation-to-custom-protocols</code>. This     vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.
    (CVE-2023-29540)

  - Firefox did not properly handle downloads of files ending in <code>.desktop</code>, which can be     interpreted to run attacker-controlled commands. <br>*This bug only affects Firefox for Linux on certain     Distributions. Other operating systems are unaffected, and Mozilla is unable to enumerate all affected     Linux Distributions.*. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR <     102.10, Firefox for Android < 112, and Thunderbird < 102.10. (CVE-2023-29541)

  - A newline in a filename could have been used to bypass the file extension security mechanisms that replace     malicious file extensions such as .lnk with .download. This could have led to accidental execution of     malicious code. *This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and     Thunderbird are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and     Thunderbird < 102.10. (CVE-2023-29542)

  - An attacker could have caused memory corruption and a potentially exploitable use-after-free of a pointer     in a global object's debugger vector. This vulnerability affects Firefox for Android < 112, Firefox < 112,     and Focus for Android < 112. (CVE-2023-29543)

  - If multiple instances of resource exhaustion occurred at the incorrect time, the garbage collector could     have caused memory corruption and a potentially exploitable crash. This vulnerability affects Firefox for     Android < 112, Firefox < 112, and Focus for Android < 112. (CVE-2023-29544)

  - Similar to CVE-2023-28163, this time when choosing 'Save Link As', suggested filenames containing     environment variable names would have resolved those in the context of the current user. *This bug only     affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected.*     This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10. (CVE-2023-29545)

  - When recording the screen while in Private Browsing on Firefox for Android the address bar and keyboard     were not hidden, potentially leaking sensitive information. *This bug only affects Firefox for Android.
    Other operating systems are unaffected.* This vulnerability affects Firefox for Android < 112 and Focus     for Android < 112. (CVE-2023-29546)

  - When a secure cookie existed in the Firefox cookie jar an insecure cookie for the same domain could have     been created, when it should have silently failed. This could have led to a desynchronization in expected     results when reading from the secure cookie. This vulnerability affects Firefox for Android < 112, Firefox     < 112, and Focus for Android < 112. (CVE-2023-29547)

  - A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization result. This     vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android <     112, and Thunderbird < 102.10. (CVE-2023-29548)

  - Under certain circumstances, a call to the <code>bind</code> function may have resulted in the incorrect     realm. This may have created a vulnerability relating to JavaScript-implemented sandboxes such as SES.
    This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.
    (CVE-2023-29549)

  - Memory safety bugs present in Firefox 111 and Firefox ESR 102.9. Some of these bugs showed evidence of     memory corruption and we presume that with enough effort some of these could have been exploited to run     arbitrary code. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10,     Firefox for Android < 112, and Thunderbird < 102.10. (CVE-2023-29550)

  - Memory safety bugs present in Firefox 111. Some of these bugs showed evidence of memory corruption and we     presume that with enough effort some of these could have been exploited to run arbitrary code. This     vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.
    (CVE-2023-29551)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote host is affected by the vulnerability described in GLSA-202305-35 (Mozilla Firefox: Multiple Vulnerabilities)

  - An attacker could construct a PKCS 12 cert bundle in such a way that could allow for arbitrary memory     writes via PKCS 12 Safe Bag attributes being mishandled.  (CVE-2023-0767)

  - Unexpected data returned from the Safe Browsing API could have led to memory corruption and a potentially     exploitable crash.  (CVE-2023-1945)

  - A double-free in libwebp could have led to memory corruption and a potentially exploitable crash.
    (CVE-2023-1999)

  - Mozilla: Content security policy leak in violation reports using iframes (CVE-2023-25728)

  - Permission prompts for opening external schemes were only shown for <code>ContentPrincipals</code>     resulting in extensions being able to open them without user interaction via     <code>ExpandedPrincipals</code>. This could lead to further malicious actions such as downloading files or     interacting with software already installed on the system.  (CVE-2023-25729)

  - A background script invoking <code>requestFullscreen</code> and then blocking the main thread could force     the browser into fullscreen mode indefinitely, resulting in potential user confusion or spoofing attacks.
    (CVE-2023-25730)

  - Due to URL previews in the network panel of developer tools improperly storing URLs, query parameters     could potentially be used to overwrite global objects in privileged code.  (CVE-2023-25731)

  - When encoding data from an <code>inputStream</code> in <code>xpcom</code> the size of the input being     encoded was not correctly calculated potentially leading to an out of bounds memory write.
    (CVE-2023-25732)

  - After downloading a Windows <code>.url</code> shortcut from the local filesystem, an attacker could supply     a remote path that would lead to unexpected network requests from the operating system.  This also had the     potential to leak NTLM credentials to the resource. This bug only affects Thunderbird on Windows. Other     operating systems are unaffected.  (CVE-2023-25734)

  - Cross-compartment wrappers wrapping a scripted proxy could have caused objects from other compartments to     be stored in the main compartment resulting in a use-after-free after unwrapping the proxy.
    (CVE-2023-25735)

  - An invalid downcast from <code>nsTextNode</code> to <code>SVGElement</code> could have lead to undefined     behavior.  (CVE-2023-25737)

  - Members of the <code>DEVMODEW</code> struct set by the printer device driver weren't being validated and     could have resulted in invalid values which in turn would cause the browser to attempt out of bounds     access to related variables. This bug only affects Thunderbird on Windows. Other operating systems are     unaffected.  (CVE-2023-25738)

  - Module load requests that failed were not being checked as to whether or not they were cancelled causing a     use-after-free in <code>ScriptLoadContext</code>.  (CVE-2023-25739)

  - When importing a SPKI RSA public key as ECDSA P-256, the key would be handled incorrectly causing the tab     to crash.  (CVE-2023-25742)

  - Mozilla developers Philipp and Gabriele Svelto reported memory safety bugs present in Thunderbird 102.7.
    Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of     these could have been exploited to run arbitrary code.  (CVE-2023-25746)

  - By displaying a prompt with a long description, the fullscreen notification could have been hidden,     resulting in potential user confusion or spoofing attacks.  This bug only affects Firefox for Android.
    Other operating systems are unaffected.  (CVE-2023-25748)

  - Android applications with unpatched vulnerabilities can be launched from a browser using Intents, exposing     users to these vulnerabilities. Firefox will now confirm with users that they want to launch an external     application before doing so.  This bug only affects Firefox for Android. Other versions of Firefox are     unaffected.  (CVE-2023-25749)

  - Under certain circumstances, a ServiceWorker's offline cache may have leaked to the file system when using     private browsing mode.  (CVE-2023-25750)

  - Mozilla: Incorrect code generation during JIT compilation (CVE-2023-25751)

  - Mozilla: Potential out-of-bounds when accessing throttled streams (CVE-2023-25752)

  - The fullscreen notification could have been hidden on Firefox for Android by using download popups,     resulting in potential user confusion or spoofing attacks.  This bug only affects Firefox for Android.
    Other operating systems are unaffected.  (CVE-2023-28159)

  - When following a redirect to a publicly accessible web extension file, the URL may have been translated to     the actual local path, leaking potentially sensitive information.  (CVE-2023-28160)

  - If temporary one-time permissions, such as the ability to use the Camera, were granted to a document     loaded using a file: URL, that permission persisted in that tab for all other documents loaded from a     file: URL. This is potentially dangerous if the local files came from different sources, such as in a     download directory.  (CVE-2023-28161)

  - Mozilla: Invalid downcast in Worklets (CVE-2023-28162)

  - When downloading files through the Save As dialog on Windows with suggested filenames containing     environment variable names, Windows would have resolved those in the context of the current user.  This     bug only affects Firefox on Windows. Other versions of Firefox are unaffected.  (CVE-2023-28163)

  - Mozilla: URL being dragged from a removed cross-origin iframe into the same tab triggered navigation     (CVE-2023-28164)

  - Mozilla: Memory safety bugs fixed in Firefox 111 and Firefox ESR 102.9 (CVE-2023-28176)

  - Mozilla developers and community members Calixte Denizet, Gabriele Svelto, Andrew McCreight, and the     Mozilla Fuzzing Team reported memory safety bugs present in Firefox 110. Some of these bugs showed     evidence of memory corruption and we presume that with enough effort some of these could have been     exploited to run arbitrary code.  (CVE-2023-28177)

  - A website could have obscured the fullscreen notification by using a combination of     <code>window.open</code>, fullscreen requests, <code>window.name</code> assignments, and     <code>setInterval</code> calls. This could have led to user confusion and possible spoofing attacks.
    (CVE-2023-29533)

  - Following a Garbage Collector compaction, weak maps may have been accessed before they were correctly     traced. This resulted in memory corruption and a potentially exploitable crash.  (CVE-2023-29535)

  - An attacker could cause the memory manager to incorrectly free a pointer that addresses attacker-     controlled memory, resulting in an assertion, memory corruption, or a potentially exploitable crash.
    (CVE-2023-29536)

  - Multiple race conditions in the font initialization could have led to memory corruption and execution of     attacker-controlled code.  (CVE-2023-29537)

  - Under specific circumstances a WebExtension may have received a <code>jar:file:///</code> URI instead of a     <code>moz-extension:///</code> URI during a load request. This leaked directory paths on the user's     machine.  (CVE-2023-29538)

  - When handling the filename directive in the Content-Disposition header, the filename would be truncated if     the filename contained a NULL character. This could have led to reflected file download attacks     potentially tricking users to install malware.  (CVE-2023-29539)

  - Using a redirect embedded into <code>sourceMappingUrls</code> could allow for navigation to external     protocol links in sandboxed iframes without <code>allow-top-navigation-to-custom-protocols</code>.
    (CVE-2023-29540)

  - Thunderbird did not properly handle downloads of files ending in <code>.desktop</code>, which can be     interpreted to run attacker-controlled commands.  This bug only affects Thunderbird for Linux on certain     Distributions. Other operating systems are unaffected, and Mozilla is unable to enumerate all affected     Linux Distributions.  (CVE-2023-29541)

  - An attacker could have caused memory corruption and a potentially exploitable use-after-free of a pointer     in a global object's debugger vector.  (CVE-2023-29543)

  - If multiple instances of resource exhaustion occurred at the incorrect time, the garbage collector could     have caused memory corruption and a potentially exploitable crash.  (CVE-2023-29544)

  - When a secure cookie existed in the Firefox cookie jar an insecure cookie for the same domain could have     been created, when it should have silently failed.  This could have led to a desynchronization in expected     results when reading from the secure cookie.  (CVE-2023-29547)

  - A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization result.
    (CVE-2023-29548)

  - Under certain circumstances, a call to the <code>bind</code> function may have resulted in the incorrect     realm.  This may have created a vulnerability relating to JavaScript-implemented sandboxes such as SES.
    (CVE-2023-29549)

  - Mozilla developers Andrew Osmond, Sebastian Hengst, Andrew McCreight, and the Mozilla Fuzzing Team     reported memory safety bugs present in Thunderbird 102.9. Some of these bugs showed evidence of memory     corruption and we presume that with enough effort some of these could have been exploited to run arbitrary     code.  (CVE-2023-29550)

  - Mozilla developers Randell Jesup, Andrew McCreight, Gabriele Svelto, and the Mozilla Fuzzing Team reported     memory safety bugs present in Firefox 111. Some of these bugs showed evidence of memory corruption and we     presume that with enough effort some of these could have been exploited to run arbitrary code.
    (CVE-2023-29551)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Firefox installed on the remote Windows host is prior to 112.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2023-13 advisory.

  - An attacker could have caused an out of bounds memory access using WebGL APIs, leading to memory     corruption and a potentially exploitable crash. This bug only affects Firefox for macOS. Other operating     systems are unaffected. (CVE-2023-29531)

  - A local attacker can trick the Mozilla Maintenance Service into applying an unsigned update file by     pointing the service at an update file on a malicious SMB server. The update file can be replaced after     the signature check, before the use, because the write-lock requested by the service does not work on a     SMB server. Note: This attack requires local system access and only affects Windows. Other operating     systems are not affected. (CVE-2023-29532)

  - A website could have obscured the fullscreen notification by using a combination of     <code>window.open</code>, fullscreen requests, <code>window.name</code> assignments, and     <code>setInterval</code> calls. This could have led to user confusion and possible spoofing attacks.
    (CVE-2023-29533)

  - Different techniques existed to obscure the fullscreen notification in Firefox and Focus for Android.
    These could have led to potential user confusion and spoofing attacks. This bug only affects Firefox and     Focus for Android. Other versions of Firefox are unaffected. (CVE-2023-29534)

  - Following a Garbage Collector compaction, weak maps may have been accessed before they were correctly     traced. This resulted in memory corruption and a potentially exploitable crash. (CVE-2023-29535)

  - An attacker could cause the memory manager to incorrectly free a pointer that addresses attacker-     controlled memory, resulting in an assertion, memory corruption, or a potentially exploitable crash.
    (CVE-2023-29536)

  - Multiple race conditions in the font initialization could have led to memory corruption and execution of     attacker-controlled code. (CVE-2023-29537)

  - Under specific circumstances a WebExtension may have received a <code>jar:file:///</code> URI instead of a     <code>moz-extension:///</code> URI during a load request. This leaked directory paths on the user's     machine. (CVE-2023-29538)

  - When handling the filename directive in the Content-Disposition header, the filename would be truncated if     the filename contained a NULL character. This could have led to reflected file download attacks     potentially tricking users to install malware. (CVE-2023-29539)

  - Using a redirect embedded into <code>sourceMappingUrls</code> could allow for navigation to external     protocol links in sandboxed iframes without <code>allow-top-navigation-to-custom-protocols</code>.
    (CVE-2023-29540)

  - Firefox did not properly handle downloads of files ending in <code>.desktop</code>, which can be     interpreted to run attacker-controlled commands.  This bug only affects Firefox for Linux on certain     Distributions. Other operating systems are unaffected, and Mozilla is unable to enumerate all affected     Linux Distributions. (CVE-2023-29541)

  - A newline in a filename could have been used to bypass the file extension security mechanisms that replace     malicious file extensions such as .lnk  with .download. This could have led to accidental execution of     malicious code. This bug only affects Firefox on Windows. Other versions of Firefox are unaffected.
    (CVE-2023-29542)

  - An attacker could have caused memory corruption and a potentially exploitable use-after-free of a pointer     in a global object's debugger vector. (CVE-2023-29543)

  - If multiple instances of resource exhaustion occurred at the incorrect time, the garbage collector could     have caused memory corruption and a potentially exploitable crash. (CVE-2023-29544)

  - Similar to CVE-2023-28163, this time when choosing 'Save Link As', suggested filenames containing     environment variable names would have resolved those in the context of the current user.  This bug only     affects Firefox on Windows. Other versions of Firefox are unaffected. (CVE-2023-29545)

  - When recording the screen while in Private Browsing on Firefox for Android the address bar and keyboard     were not hidden, potentially leaking sensitive information.  This bug only affects Firefox for Android.
    Other operating systems are unaffected. (CVE-2023-29546)

  - When a secure cookie existed in the Firefox cookie jar an insecure cookie for the same domain could have     been created, when it should have silently failed.  This could have led to a desynchronization in expected     results when reading from the secure cookie. (CVE-2023-29547)

  - A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization result.
    (CVE-2023-29548)

  - Under certain circumstances, a call to the <code>bind</code> function may have resulted in the incorrect     realm.  This may have created a vulnerability relating to JavaScript-implemented sandboxes such as SES.
    (CVE-2023-29549)

  - Mozilla developers Randell Jesup, Andrew Osmond, Sebastian Hengst, Andrew McCreight, and the Mozilla     Fuzzing Team reported memory safety bugs present in Firefox 111 and Firefox ESR 102.9. Some of these bugs     showed evidence of memory corruption and we presume that with enough effort some of these could have been     exploited to run arbitrary code. (CVE-2023-29550)

  - Mozilla developers Randell Jesup, Andrew McCreight, Gabriele Svelto, and the Mozilla Fuzzing Team reported     memory safety bugs present in Firefox 111. Some of these bugs showed evidence of memory corruption and we     presume that with enough effort some of these could have been exploited to run arbitrary code.
    (CVE-2023-29551)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 37 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-1749adc275 advisory.

  - There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode()     function and loop through to free best.bw and assign best = trial pointer. The second loop will then     return 0 because of an Out of memory error in VP8 encoder, the pointer is still assigned to trial and the     AddressSanitizer will attempt a double free. (CVE-2023-1999)

  - An attacker could have caused an out of bounds memory access using WebGL APIs, leading to memory     corruption and a potentially exploitable crash. *This bug only affects Firefox and Thunderbird for macOS.
    Other operating systems are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10,     and Thunderbird < 102.10. (CVE-2023-29531)

  - A local attacker can trick the Mozilla Maintenance Service into applying an unsigned update file by     pointing the service at an update file on a malicious SMB server. The update file can be replaced after     the signature check, before the use, because the write-lock requested by the service does not work on a     SMB server. *Note: This attack requires local system access and only affects Windows. Other operating     systems are not affected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird     < 102.10. (CVE-2023-29532)

  - A website could have obscured the fullscreen notification by using a combination of     <code>window.open</code>, fullscreen requests, <code>window.name</code> assignments, and     <code>setInterval</code> calls. This could have led to user confusion and possible spoofing attacks. This     vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android <     112, and Thunderbird < 102.10. (CVE-2023-29533)

  - Different techniques existed to obscure the fullscreen notification in Firefox and Focus for Android.
    These could have led to potential user confusion and spoofing attacks. *This bug only affects Firefox and     Focus for Android. Other versions of Firefox are unaffected.* This vulnerability affects Firefox for     Android < 112 and Focus for Android < 112. (CVE-2023-29534)

  - Following a Garbage Collector compaction, weak maps may have been accessed before they were correctly     traced. This resulted in memory corruption and a potentially exploitable crash. This vulnerability affects     Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird <     102.10. (CVE-2023-29535)

  - An attacker could cause the memory manager to incorrectly free a pointer that addresses attacker-     controlled memory, resulting in an assertion, memory corruption, or a potentially exploitable crash. This     vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android <     112, and Thunderbird < 102.10. (CVE-2023-29536)

  - Multiple race conditions in the font initialization could have led to memory corruption and execution of     attacker-controlled code. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus     for Android < 112. (CVE-2023-29537)

  - Under specific circumstances a WebExtension may have received a <code>jar:file:///</code> URI instead of a     <code>moz-extension:///</code> URI during a load request. This leaked directory paths on the user's     machine. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.
    (CVE-2023-29538)

  - When handling the filename directive in the Content-Disposition header, the filename would be truncated if     the filename contained a NULL character. This could have led to reflected file download attacks     potentially tricking users to install malware. This vulnerability affects Firefox < 112, Focus for Android     < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10. (CVE-2023-29539)

  - Using a redirect embedded into <code>sourceMappingUrls</code> could allow for navigation to external     protocol links in sandboxed iframes without <code>allow-top-navigation-to-custom-protocols</code>. This     vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.
    (CVE-2023-29540)

  - Firefox did not properly handle downloads of files ending in <code>.desktop</code>, which can be     interpreted to run attacker-controlled commands. <br>*This bug only affects Firefox for Linux on certain     Distributions. Other operating systems are unaffected, and Mozilla is unable to enumerate all affected     Linux Distributions.*. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR <     102.10, Firefox for Android < 112, and Thunderbird < 102.10. (CVE-2023-29541)

  - A newline in a filename could have been used to bypass the file extension security mechanisms that replace     malicious file extensions such as .lnk with .download. This could have led to accidental execution of     malicious code. *This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and     Thunderbird are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and     Thunderbird < 102.10. (CVE-2023-29542)

  - An attacker could have caused memory corruption and a potentially exploitable use-after-free of a pointer     in a global object's debugger vector. This vulnerability affects Firefox for Android < 112, Firefox < 112,     and Focus for Android < 112. (CVE-2023-29543)

  - If multiple instances of resource exhaustion occurred at the incorrect time, the garbage collector could     have caused memory corruption and a potentially exploitable crash. This vulnerability affects Firefox for     Android < 112, Firefox < 112, and Focus for Android < 112. (CVE-2023-29544)

  - Similar to CVE-2023-28163, this time when choosing 'Save Link As', suggested filenames containing     environment variable names would have resolved those in the context of the current user. *This bug only     affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected.*     This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10. (CVE-2023-29545)

  - When recording the screen while in Private Browsing on Firefox for Android the address bar and keyboard     were not hidden, potentially leaking sensitive information. *This bug only affects Firefox for Android.
    Other operating systems are unaffected.* This vulnerability affects Firefox for Android < 112 and Focus     for Android < 112. (CVE-2023-29546)

  - When a secure cookie existed in the Firefox cookie jar an insecure cookie for the same domain could have     been created, when it should have silently failed. This could have led to a desynchronization in expected     results when reading from the secure cookie. This vulnerability affects Firefox for Android < 112, Firefox     < 112, and Focus for Android < 112. (CVE-2023-29547)

  - A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization result. This     vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android <     112, and Thunderbird < 102.10. (CVE-2023-29548)

  - Under certain circumstances, a call to the <code>bind</code> function may have resulted in the incorrect     realm. This may have created a vulnerability relating to JavaScript-implemented sandboxes such as SES.
    This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.
    (CVE-2023-29549)

  - Memory safety bugs present in Firefox 111 and Firefox ESR 102.9. Some of these bugs showed evidence of     memory corruption and we presume that with enough effort some of these could have been exploited to run     arbitrary code. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10,     Firefox for Android < 112, and Thunderbird < 102.10. (CVE-2023-29550)

  - Memory safety bugs present in Firefox 111. Some of these bugs showed evidence of memory corruption and we     presume that with enough effort some of these could have been exploited to run arbitrary code. This     vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.
    (CVE-2023-29551)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Firefox installed on the remote macOS or Mac OS X host is prior to 112.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2023-13 advisory.

  - An attacker could have caused an out of bounds memory access using WebGL APIs, leading to memory     corruption and a potentially exploitable crash. This bug only affects Firefox for macOS. Other operating     systems are unaffected. (CVE-2023-29531)

  - A local attacker can trick the Mozilla Maintenance Service into applying an unsigned update file by     pointing the service at an update file on a malicious SMB server. The update file can be replaced after     the signature check, before the use, because the write-lock requested by the service does not work on a     SMB server. Note: This attack requires local system access and only affects Windows. Other operating     systems are not affected. (CVE-2023-29532)

  - A website could have obscured the fullscreen notification by using a combination of     <code>window.open</code>, fullscreen requests, <code>window.name</code> assignments, and     <code>setInterval</code> calls. This could have led to user confusion and possible spoofing attacks.
    (CVE-2023-29533)

  - Different techniques existed to obscure the fullscreen notification in Firefox and Focus for Android.
    These could have led to potential user confusion and spoofing attacks. This bug only affects Firefox and     Focus for Android. Other versions of Firefox are unaffected. (CVE-2023-29534)

  - Following a Garbage Collector compaction, weak maps may have been accessed before they were correctly     traced. This resulted in memory corruption and a potentially exploitable crash. (CVE-2023-29535)

  - An attacker could cause the memory manager to incorrectly free a pointer that addresses attacker-     controlled memory, resulting in an assertion, memory corruption, or a potentially exploitable crash.
    (CVE-2023-29536)

  - Multiple race conditions in the font initialization could have led to memory corruption and execution of     attacker-controlled code. (CVE-2023-29537)

  - Under specific circumstances a WebExtension may have received a <code>jar:file:///</code> URI instead of a     <code>moz-extension:///</code> URI during a load request. This leaked directory paths on the user's     machine. (CVE-2023-29538)

  - When handling the filename directive in the Content-Disposition header, the filename would be truncated if     the filename contained a NULL character. This could have led to reflected file download attacks     potentially tricking users to install malware. (CVE-2023-29539)

  - Using a redirect embedded into <code>sourceMappingUrls</code> could allow for navigation to external     protocol links in sandboxed iframes without <code>allow-top-navigation-to-custom-protocols</code>.
    (CVE-2023-29540)

  - Firefox did not properly handle downloads of files ending in <code>.desktop</code>, which can be     interpreted to run attacker-controlled commands.  This bug only affects Firefox for Linux on certain     Distributions. Other operating systems are unaffected, and Mozilla is unable to enumerate all affected     Linux Distributions. (CVE-2023-29541)

  - A newline in a filename could have been used to bypass the file extension security mechanisms that replace     malicious file extensions such as .lnk  with .download. This could have led to accidental execution of     malicious code. This bug only affects Firefox on Windows. Other versions of Firefox are unaffected.
    (CVE-2023-29542)

  - An attacker could have caused memory corruption and a potentially exploitable use-after-free of a pointer     in a global object's debugger vector. (CVE-2023-29543)

  - If multiple instances of resource exhaustion occurred at the incorrect time, the garbage collector could     have caused memory corruption and a potentially exploitable crash. (CVE-2023-29544)

  - Similar to CVE-2023-28163, this time when choosing 'Save Link As', suggested filenames containing     environment variable names would have resolved those in the context of the current user.  This bug only     affects Firefox on Windows. Other versions of Firefox are unaffected. (CVE-2023-29545)

  - When recording the screen while in Private Browsing on Firefox for Android the address bar and keyboard     were not hidden, potentially leaking sensitive information.  This bug only affects Firefox for Android.
    Other operating systems are unaffected. (CVE-2023-29546)

  - When a secure cookie existed in the Firefox cookie jar an insecure cookie for the same domain could have     been created, when it should have silently failed.  This could have led to a desynchronization in expected     results when reading from the secure cookie. (CVE-2023-29547)

  - A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization result.
    (CVE-2023-29548)

  - Under certain circumstances, a call to the <code>bind</code> function may have resulted in the incorrect     realm.  This may have created a vulnerability relating to JavaScript-implemented sandboxes such as SES.
    (CVE-2023-29549)

  - Mozilla developers Randell Jesup, Andrew Osmond, Sebastian Hengst, Andrew McCreight, and the Mozilla     Fuzzing Team reported memory safety bugs present in Firefox 111 and Firefox ESR 102.9. Some of these bugs     showed evidence of memory corruption and we presume that with enough effort some of these could have been     exploited to run arbitrary code. (CVE-2023-29550)

  - Mozilla developers Randell Jesup, Andrew McCreight, Gabriele Svelto, and the Mozilla Fuzzing Team reported     memory safety bugs present in Firefox 111. Some of these bugs showed evidence of memory corruption and we     presume that with enough effort some of these could have been exploited to run arbitrary code.
    (CVE-2023-29551)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 38 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-07c1537955 advisory.

  - There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode()     function and loop through to free best.bw and assign best = trial pointer. The second loop will then     return 0 because of an Out of memory error in VP8 encoder, the pointer is still assigned to trial and the     AddressSanitizer will attempt a double free. (CVE-2023-1999)

  - An attacker could have caused an out of bounds memory access using WebGL APIs, leading to memory     corruption and a potentially exploitable crash. *This bug only affects Firefox and Thunderbird for macOS.
    Other operating systems are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10,     and Thunderbird < 102.10. (CVE-2023-29531)

  - A local attacker can trick the Mozilla Maintenance Service into applying an unsigned update file by     pointing the service at an update file on a malicious SMB server. The update file can be replaced after     the signature check, before the use, because the write-lock requested by the service does not work on a     SMB server. *Note: This attack requires local system access and only affects Windows. Other operating     systems are not affected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird     < 102.10. (CVE-2023-29532)

  - A website could have obscured the fullscreen notification by using a combination of     <code>window.open</code>, fullscreen requests, <code>window.name</code> assignments, and     <code>setInterval</code> calls. This could have led to user confusion and possible spoofing attacks. This     vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android <     112, and Thunderbird < 102.10. (CVE-2023-29533)

  - Different techniques existed to obscure the fullscreen notification in Firefox and Focus for Android.
    These could have led to potential user confusion and spoofing attacks. *This bug only affects Firefox and     Focus for Android. Other versions of Firefox are unaffected.* This vulnerability affects Firefox for     Android < 112 and Focus for Android < 112. (CVE-2023-29534)

  - Following a Garbage Collector compaction, weak maps may have been accessed before they were correctly     traced. This resulted in memory corruption and a potentially exploitable crash. This vulnerability affects     Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird <     102.10. (CVE-2023-29535)

  - An attacker could cause the memory manager to incorrectly free a pointer that addresses attacker-     controlled memory, resulting in an assertion, memory corruption, or a potentially exploitable crash. This     vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android <     112, and Thunderbird < 102.10. (CVE-2023-29536)

  - Multiple race conditions in the font initialization could have led to memory corruption and execution of     attacker-controlled code. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus     for Android < 112. (CVE-2023-29537)

  - Under specific circumstances a WebExtension may have received a <code>jar:file:///</code> URI instead of a     <code>moz-extension:///</code> URI during a load request. This leaked directory paths on the user's     machine. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.
    (CVE-2023-29538)

  - When handling the filename directive in the Content-Disposition header, the filename would be truncated if     the filename contained a NULL character. This could have led to reflected file download attacks     potentially tricking users to install malware. This vulnerability affects Firefox < 112, Focus for Android     < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10. (CVE-2023-29539)

  - Using a redirect embedded into <code>sourceMappingUrls</code> could allow for navigation to external     protocol links in sandboxed iframes without <code>allow-top-navigation-to-custom-protocols</code>. This     vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.
    (CVE-2023-29540)

  - Firefox did not properly handle downloads of files ending in <code>.desktop</code>, which can be     interpreted to run attacker-controlled commands. <br>*This bug only affects Firefox for Linux on certain     Distributions. Other operating systems are unaffected, and Mozilla is unable to enumerate all affected     Linux Distributions.*. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR <     102.10, Firefox for Android < 112, and Thunderbird < 102.10. (CVE-2023-29541)

  - A newline in a filename could have been used to bypass the file extension security mechanisms that replace     malicious file extensions such as .lnk with .download. This could have led to accidental execution of     malicious code. *This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and     Thunderbird are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and     Thunderbird < 102.10. (CVE-2023-29542)

  - An attacker could have caused memory corruption and a potentially exploitable use-after-free of a pointer     in a global object's debugger vector. This vulnerability affects Firefox for Android < 112, Firefox < 112,     and Focus for Android < 112. (CVE-2023-29543)

  - If multiple instances of resource exhaustion occurred at the incorrect time, the garbage collector could     have caused memory corruption and a potentially exploitable crash. This vulnerability affects Firefox for     Android < 112, Firefox < 112, and Focus for Android < 112. (CVE-2023-29544)

  - Similar to CVE-2023-28163, this time when choosing 'Save Link As', suggested filenames containing     environment variable names would have resolved those in the context of the current user. *This bug only     affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected.*     This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10. (CVE-2023-29545)

  - When recording the screen while in Private Browsing on Firefox for Android the address bar and keyboard     were not hidden, potentially leaking sensitive information. *This bug only affects Firefox for Android.
    Other operating systems are unaffected.* This vulnerability affects Firefox for Android < 112 and Focus     for Android < 112. (CVE-2023-29546)

  - When a secure cookie existed in the Firefox cookie jar an insecure cookie for the same domain could have     been created, when it should have silently failed. This could have led to a desynchronization in expected     results when reading from the secure cookie. This vulnerability affects Firefox for Android < 112, Firefox     < 112, and Focus for Android < 112. (CVE-2023-29547)

  - A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization result. This     vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android <     112, and Thunderbird < 102.10. (CVE-2023-29548)

  - Under certain circumstances, a call to the <code>bind</code> function may have resulted in the incorrect     realm. This may have created a vulnerability relating to JavaScript-implemented sandboxes such as SES.
    This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.
    (CVE-2023-29549)

  - Memory safety bugs present in Firefox 111 and Firefox ESR 102.9. Some of these bugs showed evidence of     memory corruption and we presume that with enough effort some of these could have been exploited to run     arbitrary code. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10,     Firefox for Android < 112, and Thunderbird < 102.10. (CVE-2023-29550)

  - Memory safety bugs present in Firefox 111. Some of these bugs showed evidence of memory corruption and we     presume that with enough effort some of these could have been exploited to run arbitrary code. This     vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.
    (CVE-2023-29551)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
174173	Ubuntu 18.04 LTS / 20.04 LTS : Firefox vulnerabilities (USN-6010-1)	Nessus	Ubuntu Local Security Checks	4/12/2023	10/16/2023	high
174351	Fedora 36 : firefox (2023-50f9eb7aca)	Nessus	Fedora Local Security Checks	4/15/2023	4/29/2024	critical
176481	GLSA-202305-35 : Mozilla Firefox: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	5/30/2023	8/29/2023	high
174076	Mozilla Firefox < 112.0	Nessus	Windows	4/11/2023	7/11/2023	critical
174196	Fedora 37 : firefox (2023-1749adc275)	Nessus	Fedora Local Security Checks	4/13/2023	4/29/2024	critical
174077	Mozilla Firefox < 112.0	Nessus	MacOS X Local Security Checks	4/11/2023	7/11/2023	critical
174353	Fedora 38 : firefox (2023-07c1537955)	Nessus	Fedora Local Security Checks	4/15/2023	4/29/2024	critical

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