The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2024:0162 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2024-1553:
    Memory safety bugs present in Firefox 122, Firefox ESR 115.7, and Thunderbird 115.7. 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. This vulnerability affects Firefox < 123, Firefox ESR < 115.8, and     Thunderbird < 115.8.

    CVE-2024-1552:
    Incorrect code generation could have led to unexpected numeric conversions and potential undefined     behavior.*Note:* This issue only affects 32-bit ARM devices. This vulnerability affects Firefox < 123,     Firefox ESR < 115.8, and Thunderbird < 115.8.

    CVE-2024-1551:
    Set-Cookie response headers were being incorrectly honored in multipart HTTP responses. If an attacker     could control the Content-Type response header, as well as control part of the response body, they could     inject Set-Cookie response headers that would have been honored by the browser. This vulnerability affects     Firefox < 123, Firefox ESR < 115.8, and Thunderbird < 115.8.

    CVE-2024-1550:
    A malicious website could have used a combination of exiting fullscreen mode and `requestPointerLock` to     cause the user's mouse to be re-positioned unexpectedly, which could have led to user confusion and     inadvertently granting permissions they did not intend to grant. This vulnerability affects Firefox < 123,     Firefox ESR < 115.8, and Thunderbird < 115.8.

    CVE-2024-1548:
    A website could have obscured the fullscreen notification by using a dropdown select input element. This     could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 123,     Firefox ESR < 115.8, and Thunderbird < 115.8.

    CVE-2024-1547:
    Through a series of API calls and redirects, an attacker-controlled alert dialog could have been displayed     on another website (with the victim website's URL shown). This vulnerability affects Firefox < 123,     Firefox ESR < 115.8, and Thunderbird < 115.8.

    CVE-2024-0755:
    Memory safety bugs present in Firefox 121, Firefox ESR 115.6, and Thunderbird 115.6. 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 < 122, Firefox ESR < 115.7, and     Thunderbird < 115.7.

    CVE-2024-0753:
    In specific HSTS configurations an attacker could have bypassed HSTS on a subdomain. This vulnerability     affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.

    CVE-2024-0751:
    A malicious devtools extension could have been used to escalate privileges. This vulnerability affects     Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.

    CVE-2024-0750:
    A bug in popup notifications delay calculation could have made it possible for an attacker to trick a user     into granting permissions. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird     < 115.7.

    CVE-2024-0749:
    A phishing site could have repurposed an `about:` dialog to show phishing content with an incorrect origin     in the address bar. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird <     115.7.

    CVE-2024-0747:
    When a parent page loaded a child in an iframe with `unsafe-inline`, the parent Content Security Policy     could have overridden the child Content Security Policy. This vulnerability affects Firefox < 122, Firefox     ESR < 115.7, and Thunderbird < 115.7.

    CVE-2024-0746:
    A Linux user opening the print preview dialog could have caused the browser to crash. This vulnerability     affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.

    CVE-2024-0742:
    It was possible for certain browser prompts and dialogs to be activated or dismissed unintentionally by     the user due to an incorrect timestamp used to prevent input after page load. This vulnerability affects     Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.

    CVE-2024-0741:
    An out of bounds write in ANGLE could have allowed an attacker to corrupt memory leading to a potentially     exploitable crash. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.

    CVE-2023-6867:
    The timing of a button click causing a popup to disappear was approximately the same length as the anti-     clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring     them to click where the permission grant button would be about to appear. This vulnerability affects     Firefox ESR < 115.6 and Firefox < 121.

    CVE-2023-6865:
    `EncryptingOutputStream` was susceptible to exposing uninitialized data.  This issue could only be abused     in order to write data to a local disk which may have implications for private browsing mode. This     vulnerability affects Firefox ESR < 115.6 and Firefox < 121.

    CVE-2023-6864:
    Memory safety bugs present in Firefox 120, Firefox ESR 115.5, and Thunderbird 115.5. 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 ESR < 115.6, Thunderbird < 115.6, and     Firefox < 121.

    CVE-2023-6863:
    The `ShutdownObserver()` was susceptible to potentially undefined behavior due to its reliance on a     dynamic type that lacked a virtual destructor. This vulnerability affects Firefox ESR < 115.6, Thunderbird     < 115.6, and Firefox < 121.

    CVE-2023-6862:
    A use-after-free was identified in the `nsDNSService::Init`.  This issue appears to manifest rarely during     start-up. This vulnerability affects Firefox ESR < 115.6 and Thunderbird < 115.6.

    CVE-2023-6861:
    The `nsWindow::PickerOpen(void)` method was susceptible to a heap buffer overflow when running in headless     mode. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

    CVE-2023-6860:
    The `VideoBridge` allowed any content process to use textures produced by remote decoders.  This could be     abused to escape the sandbox. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and     Firefox < 121.

    CVE-2023-6859:
    A use-after-free condition affected TLS socket creation when under memory pressure. This vulnerability     affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

    CVE-2023-6858:
    Firefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling.
    This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

    CVE-2023-6857:
    When resolving a symlink, a race may occur where the buffer passed to `readlink` may actually be smaller     than necessary.
    *This bug only affects Firefox on Unix-based operating systems (Android, Linux, MacOS). Windows is     unaffected.* This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

    CVE-2023-6856:
    The WebGL `DrawElementsInstanced` method was susceptible to a heap buffer overflow when used on systems     with the Mesa VM driver.  This issue could allow an attacker to perform remote code execution and sandbox     escape. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

    CVE-2023-6212:
    Memory safety bugs present in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4. 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 < 120, Firefox ESR < 115.5.0, and     Thunderbird < 115.5.

    CVE-2023-6209:
    Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal /../ part in the     path could be used to override the specified host. This could contribute to security problems in web     sites. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

    CVE-2023-6208:
    When using X11, text selected by the page using the Selection API was erroneously copied into the primary     selection, a temporary storage not unlike the clipboard.
    *This bug only affects Firefox on X11. Other systems are unaffected.* This vulnerability affects Firefox <     120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

    CVE-2023-6207:
    Ownership mismanagement led to a use-after-free in ReadableByteStreams This vulnerability affects Firefox     < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

    CVE-2023-6206:
    The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on     permission prompts. It was possible to use this fact to surprise users by luring them to click where the     permission grant button would be about to appear. This vulnerability affects Firefox < 120, Firefox ESR <     115.5.0, and Thunderbird < 115.5.

    CVE-2023-6205:
    It was possible to cause the use of a MessagePort after it had already been freed, which could potentially     have led to an exploitable crash. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and     Thunderbird < 115.5.

    CVE-2023-6204:
    On some systemsdepending on the graphics settings and driversit was possible to force an out-of-     bounds read and leak memory data into the images created on the canvas element. This vulnerability affects     Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

    CVE-2024-1546:
    When storing and re-accessing data on a networking channel, the length of buffers may have been confused,     resulting in an out-of-bounds memory read. This vulnerability affects Firefox < 123, Firefox ESR < 115.8,     and Thunderbird < 115.8.

    CVE-2024-1549:
    If a website set a large custom cursor, portions of the cursor could have overlapped with the permission     dialog, potentially resulting in user confusion and unexpected granted permissions. This vulnerability     affects Firefox < 123, Firefox ESR < 115.8, and Thunderbird < 115.8.

    CVE-2023-52425:
    libexpat through 2.5.0 allows a denial of service (resource consumption) because many full reparsings are     required in the case of a large token for which multiple buffer fills are needed.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

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

The remote CentOS Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2023:7509 advisory.

  - On some systemsdepending on the graphics settings and driversit was possible to force an out-of-bounds     read and leak memory data into the images created on the canvas element. This vulnerability affects     Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5. (CVE-2023-6204)

  - It was possible to cause the use of a MessagePort after it had already been freed, which could potentially     have led to an exploitable crash. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and     Thunderbird < 115.5. (CVE-2023-6205)

  - The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on     permission prompts. It was possible to use this fact to surprise users by luring them to click where the     permission grant button would be about to appear. This vulnerability affects Firefox < 120, Firefox ESR <     115.5.0, and Thunderbird < 115.5. (CVE-2023-6206)

  - Ownership mismanagement led to a use-after-free in ReadableByteStreams This vulnerability affects Firefox     < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5. (CVE-2023-6207)

  - When using X11, text selected by the page using the Selection API was erroneously copied into the primary     selection, a temporary storage not unlike the clipboard. *This bug only affects Firefox on X11. Other     systems are unaffected.* This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird     < 115.5. (CVE-2023-6208)

  - Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal /../ part in the     path could be used to override the specified host. This could contribute to security problems in web     sites. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
    (CVE-2023-6209)

  - Memory safety bugs present in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4. 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 < 120, Firefox ESR < 115.5.0, and     Thunderbird < 115.5. (CVE-2023-6212)

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 39 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-985a025a03 advisory.

    Update to 115.5.0

    * https://www.mozilla.org/en-US/security/advisories/mfsa2023-52/
    * https://www.thunderbird.net/en-US/thunderbird/115.5.0/releasenotes/

Tenable has extracted the preceding description block directly from the Fedora security advisory.

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 Thunderbird installed on the remote Windows host is prior to 115.5.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2023-52 advisory.

  - On some systemsdepending on the graphics settings and driversit was possible to force an out-of-bounds     read and leak memory data into the images created on the canvas element. (CVE-2023-6204)

  - It was possible to cause the use of a MessagePort after it had already been freed, which could potentially     have led to an exploitable crash. (CVE-2023-6205)

  - The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on     permission prompts. It was possible to use this fact to surprise users by luring them to click where the     permission grant button would be about to appear. (CVE-2023-6206)

  - Ownership mismanagement led to a use-after-free in ReadableByteStreams (CVE-2023-6207)

  - When using X11, text selected by the page using the Selection API was erroneously copied into the primary     selection, a temporary storage not unlike the clipboard. This bug only affects Thunderbird on X11. Other     systems are unaffected. (CVE-2023-6208)

  - Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal /../ part in the     path could be used to override the specified host. This could contribute to security problems in web     sites. (CVE-2023-6209)

  - Memory safety bugs present in Firefox 119, Firefox 115.4, and Thunderbird 115.4. 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-2023-6212)

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

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2023:7501 advisory.

    Mozilla Thunderbird is a standalone mail and newsgroup client.

    This update upgrades Thunderbird to version 115.5.0.

    Security Fix(es):

    * Mozilla: Out-of-bound memory access in WebGL2 blitFramebuffer (CVE-2023-6204)

    * Mozilla: Use-after-free in MessagePort::Entangled (CVE-2023-6205)

    * Mozilla: Clickjacking permission prompts using the fullscreen transition (CVE-2023-6206)

    * Mozilla: Use-after-free in ReadableByteStreamQueueEntry::Buffer (CVE-2023-6207)

    * Mozilla: Memory safety bugs fixed in Firefox 120, Firefox ESR 115.5, and Thunderbird 115.5     (CVE-2023-6212)

    * Mozilla: Using Selection API would copy contents into X11 primary selection. (CVE-2023-6208)

    * Mozilla: Incorrect parsing of relative URLs starting with /// (CVE-2023-6209)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Oracle Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2023-7500 advisory.

    [115.5.0-1.0.1]
    - Replaced thunderbird-redhat-default-prefs.js with thunderbird-oracle-default-prefs.js

    [115.5.0-1]
    - Update to 115.5.0 build1

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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

The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2023:7509 advisory.

    Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and     portability.

    This update upgrades Firefox to version 115.5.0 ESR.

    Security Fix(es):

    * Mozilla: Out-of-bound memory access in WebGL2 blitFramebuffer (CVE-2023-6204)

    * Mozilla: Use-after-free in MessagePort::Entangled (CVE-2023-6205)

    * Mozilla: Clickjacking permission prompts using the fullscreen transition (CVE-2023-6206)

    * Mozilla: Use-after-free in ReadableByteStreamQueueEntry::Buffer (CVE-2023-6207)

    * Mozilla: Memory safety bugs fixed in Firefox 120, Firefox ESR 115.5, and Thunderbird 115.5     (CVE-2023-6212)

    * Mozilla: Using Selection API would copy contents into X11 primary selection. (CVE-2023-6208)

    * Mozilla: Incorrect parsing of relative URLs starting with /// (CVE-2023-6209)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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 Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2023:0307 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

      CVE-2023-6204:
      On some systemsdepending on the graphics settings and driversit was possible to force an out-of-     bounds read and leak memory data into the images created on the canvas element. This vulnerability affects     Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

      CVE-2023-6205:
      It was possible to cause the use of a MessagePort after it had already been freed, which could     potentially have led to an exploitable crash. This vulnerability affects Firefox < 120, Firefox ESR <     115.5.0, and Thunderbird < 115.5.

      CVE-2023-6206:
      The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on     permission prompts. It was possible to use this fact to surprise users by luring them to click where the     permission grant button would be about to appear. This vulnerability affects Firefox < 120, Firefox ESR <     115.5.0, and Thunderbird < 115.5.

      CVE-2023-6207:
      Ownership mismanagement led to a use-after-free in ReadableByteStreams This vulnerability affects     Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

      CVE-2023-6208:
      When using X11, text selected by the page using the Selection API was erroneously copied into the     primary selection, a temporary storage not unlike the clipboard.
      *This bug only affects Firefox on X11. Other systems are unaffected.* This vulnerability affects Firefox     < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

      CVE-2023-6209:
      Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal /../ part in     the path could be used to override the specified host. This could contribute to security problems in web     sites. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

      CVE-2023-6212:
      Memory safety bugs present in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4. 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 < 120, Firefox ESR < 115.5.0, and     Thunderbird < 115.5.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

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

The remote Oracle Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2023-7508 advisory.

    [115.5.0-1.0.1]
    - Update to 115.5.0 build1
    - Add firefox-oracle-default-prefs.js and remove the corresponding Red Hat file

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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 115.5. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2023-50 advisory.

  - On some systemsdepending on the graphics settings and driversit was possible to force an out-of-bounds     read and leak memory data into the images created on the canvas element. (CVE-2023-6204)

  - It was possible to cause the use of a MessagePort after it had already been freed, which could potentially     have led to an exploitable crash. (CVE-2023-6205)

  - The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on     permission prompts. It was possible to use this fact to surprise users by luring them to click where the     permission grant button would be about to appear. (CVE-2023-6206)

  - Ownership mismanagement led to a use-after-free in ReadableByteStreams (CVE-2023-6207)

  - When using X11, text selected by the page using the Selection API was erroneously copied into the primary     selection, a temporary storage not unlike the clipboard. This bug only affects Firefox on X11. Other     systems are unaffected. (CVE-2023-6208)

  - Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal /../ part in the     path could be used to override the specified host. This could contribute to security problems in web     sites. (CVE-2023-6209)

  - Memory safety bugs present in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4. 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-2023-6212)

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 120.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2023-49 advisory.

  - Memory safety bugs present in Firefox 119. 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-2023-6213)

  - On some systemsdepending on the graphics settings and driversit was possible to force an out-of-     bounds read and leak memory data into the images created on the canvas element. (CVE-2023-6204)

  - It was possible to cause the use of a MessagePort after it had already been freed, which could potentially     have led to an exploitable crash. (CVE-2023-6205)

  - The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on     permission prompts. It was possible to use this fact to surprise users by luring them to click where the     permission grant button would be about to appear. (CVE-2023-6206)

  - Ownership mismanagement led to a use-after-free in ReadableByteStreams (CVE-2023-6207)

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
276143	TencentOS Server 4: firefox (TSSA-2024:0162)	Nessus	Tencent Local Security Checks	11/20/2025	11/20/2025	high
187226	CentOS 7 : firefox (RHSA-2023:7509)	Nessus	CentOS Local Security Checks	12/22/2023	12/22/2023	high
186324	Fedora 39 : thunderbird (2023-985a025a03)	Nessus	Fedora Local Security Checks	11/27/2023	11/14/2024	high
186036	Mozilla Thunderbird < 115.5.0	Nessus	Windows	11/21/2023	11/29/2023	high
186314	RHEL 9 : thunderbird (RHSA-2023:7501)	Nessus	Red Hat Local Security Checks	11/27/2023	11/7/2024	high
186422	Oracle Linux 8 : thunderbird (ELSA-2023-7500)	Nessus	Oracle Linux Local Security Checks	11/29/2023	9/9/2025	high
186312	RHEL 7 : firefox (RHSA-2023:7509)	Nessus	Red Hat Local Security Checks	11/27/2023	11/7/2024	high
239036	TencentOS Server 3: thunderbird (TSSA-2023:0307)	Nessus	Tencent Local Security Checks	6/16/2025	11/20/2025	high
186423	Oracle Linux 8 : firefox (ELSA-2023-7508)	Nessus	Oracle Linux Local Security Checks	11/29/2023	9/9/2025	high
186032	Mozilla Firefox < 115.5	Nessus	Windows	11/21/2023	6/23/2026	high
186029	Mozilla Firefox < 120.0	Nessus	MacOS X Local Security Checks	11/21/2023	11/18/2025	high

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