The version of Firefox ESR installed on the remote Windows host is prior to 78.5. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-51 advisory.

  - Heap buffer overflow in Freetype in Google Chrome prior to 86.0.4240.111 allowed a remote attacker to     potentially exploit heap corruption via a crafted HTML page. (CVE-2020-15999)

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

This update for MozillaFirefox fixes the following issues :

  - Firefox Extended Support Release 78.5.0 ESR     (bsc#1178824)

  - CVE-2020-26951: Parsing mismatches could confuse and     bypass security sanitizer for chrome privileged code

  - CVE-2020-16012: Variable time processing of cross-origin     images during drawImage calls

  - CVE-2020-26953: Fullscreen could be enabled without     displaying the security UI

  - CVE-2020-26956: XSS through paste (manual and clipboard     API)

  - CVE-2020-26958: Requests intercepted through     ServiceWorkers lacked MIME type restrictions

  - CVE-2020-26959: Use-after-free in WebRequestService

  - CVE-2020-26960: Potential use-after-free in uses of     nsTArray

  - CVE-2020-15999: Heap buffer overflow in freetype

  - CVE-2020-26961: DoH did not filter IPv4 mapped IP     Addresses

  - CVE-2020-26965: Software keyboards may have remembered     typed passwords

  - CVE-2020-26966: Single-word search queries were also     broadcast to local network

  - CVE-2020-26968: Memory safety bugs fixed in Firefox 83     and Firefox ESR 78.5

This update was imported from the SUSE:SLE-15:Update update project.

The remote NewStart CGSL host, running version MAIN 6.02, has firefox packages installed that are affected by multiple vulnerabilities:

  - In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in     an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR <     78.4.1, and Thunderbird < 78.4.2. (CVE-2020-26950)

  - By exploiting an Open Redirect vulnerability on a website, an attacker could have spoofed the site     displayed in the download file dialog to show the original site (the one suffering from the open redirect)     rather than the site the file was actually downloaded from. This vulnerability affects Firefox < 81,     Thunderbird < 78.3, and Firefox ESR < 78.3. (CVE-2020-15677)

  - Firefox sometimes ran the onload handler for SVG elements that the DOM sanitizer decided to remove,     resulting in JavaScript being executed after pasting attacker-controlled data into a contenteditable     element. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.
    (CVE-2020-15676)

  - When recursing through graphical layers while scrolling, an iterator may have become invalid, resulting in     a potential use-after-free. This occurs because the function     APZCTreeManager::ComputeClippedCompositionBounds did not follow iterator invalidation rules. This     vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3. (CVE-2020-15678)

  - Mozilla developers reported memory safety bugs present in Firefox 80 and Firefox ESR 78.2. 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 < 81, Thunderbird < 78.3, and     Firefox ESR < 78.3. (CVE-2020-15673)

  - Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR     78.3. 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 < 78.4,     Firefox < 82, and Thunderbird < 78.4. (CVE-2020-15683)

  - Use after free in WebRTC in Google Chrome prior to 86.0.4240.75 allowed a remote attacker to potentially     exploit heap corruption via a crafted HTML page. (CVE-2020-15969)

  - A parsing and event loading mismatch in Firefox's SVG code could have allowed load events to fire, even     after sanitization. An attacker already capable of exploiting an XSS vulnerability in privileged internal     pages could have used this attack to bypass our built-in sanitizer. This vulnerability affects Firefox <     83, Firefox ESR < 78.5, and Thunderbird < 78.5. (CVE-2020-26951)

  - Side-channel information leakage in graphics in Google Chrome prior to 87.0.4280.66 allowed a remote     attacker to leak cross-origin data via a crafted HTML page. (CVE-2020-16012)

  - It was possible to cause the browser to enter fullscreen mode without displaying the security UI; thus     making it possible to attempt a phishing attack or otherwise confuse the user. This vulnerability affects     Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. (CVE-2020-26953)

  - In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and     therefore lead to XSS. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird <     78.5. (CVE-2020-26956)

  - Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted and     cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a     Content Security Policy bypass. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and     Thunderbird < 78.5. (CVE-2020-26958)

  - During browser shutdown, reference decrementing could have occured on a previously freed object, resulting     in a use-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects     Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. (CVE-2020-26959)

  - If the Compact() method was called on an nsTArray, the array could have been reallocated without updating     other pointers, leading to a potential use-after-free and exploitable crash. This vulnerability affects     Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. (CVE-2020-26960)

  - When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses     as these do not make sense coming from a DoH resolver. However when an IPv4 address was mapped through     IPv6, these addresses were erroneously let through, leading to a potential DNS Rebinding attack. This     vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. (CVE-2020-26961)

  - Mozilla developers reported memory safety bugs present in Firefox 82 and Firefox ESR 78.4. 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 < 83, Firefox ESR < 78.5, and     Thunderbird < 78.5. (CVE-2020-26968)

  - Some websites have a feature Show Password where clicking a button will change a password field into a     textbook field, revealing the typed password. If, when using a software keyboard that remembers user     input, a user typed their password and used that feature, the type of the password field was changed,     resulting in a keyboard layout change and the possibility for the software keyboard to remember the typed     password. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
    (CVE-2020-26965)

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

The remote Redhat Enterprise Linux 6 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:5257 advisory.

  - Mozilla: Variable time processing of cross-origin images during drawImage calls (CVE-2020-16012)

  - Mozilla: Parsing mismatches could confuse and bypass security sanitizer for chrome privileged code     (CVE-2020-26951)

  - Mozilla: Fullscreen could be enabled without displaying the security UI (CVE-2020-26953)

  - Mozilla: XSS through paste (manual and clipboard API) (CVE-2020-26956)

  - Mozilla: Requests intercepted through ServiceWorkers lacked MIME type restrictions (CVE-2020-26958)

  - Mozilla: Use-after-free in WebRequestService (CVE-2020-26959)

  - Mozilla: Potential use-after-free in uses of nsTArray (CVE-2020-26960)

  - Mozilla: DoH did not filter IPv4 mapped IP Addresses (CVE-2020-26961)

  - Mozilla: Software keyboards may have remembered typed passwords (CVE-2020-26965)

  - Mozilla: Memory safety bugs fixed in Firefox 83 and Firefox ESR 78.5 (CVE-2020-26968)

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

This update for MozillaFirefox fixes the following issues :

Firefox Extended Support Release 78.5.0 ESR (bsc#1178824)

  - CVE-2020-26951: Parsing mismatches could confuse and     bypass security sanitizer for chrome privileged code

  - CVE-2020-16012: Variable time processing of cross-origin     images during drawImage calls

  - CVE-2020-26953: Fullscreen could be enabled without     displaying the security UI

  - CVE-2020-26956: XSS through paste (manual and clipboard     API)

  - CVE-2020-26958: Requests intercepted through     ServiceWorkers lacked MIME type restrictions

  - CVE-2020-26959: Use-after-free in WebRequestService

  - CVE-2020-26960: Potential use-after-free in uses of     nsTArray

  - CVE-2020-15999: Heap buffer overflow in freetype

  - CVE-2020-26961: DoH did not filter IPv4 mapped IP     Addresses

  - CVE-2020-26965: Software keyboards may have remembered     typed passwords

  - CVE-2020-26966: Single-word search queries were also     broadcast to local network

  - CVE-2020-26968: Memory safety bugs fixed in Firefox 83     and Firefox ESR 78.5

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Published	Updated	Severity
142913	Mozilla Firefox ESR < 78.5	Nessus	Windows	11/17/2020	12/5/2022	high
143340	openSUSE Security Update : MozillaFirefox (openSUSE-2020-2031)	Nessus	SuSE Local Security Checks	11/30/2020	12/5/2022	high
145368	openSUSE Security Update : MozillaFirefox (openSUSE-2020-2315)	Nessus	SuSE Local Security Checks	1/25/2021	4/25/2023	high
147352	NewStart CGSL MAIN 6.02 : firefox Multiple Vulnerabilities (NS-SA-2021-0065)	Nessus	NewStart CGSL Local Security Checks	3/10/2021	5/10/2022	critical
143366	RHEL 6 : firefox (RHSA-2020:5257)	Nessus	Red Hat Local Security Checks	11/30/2020	4/28/2024	high
143741	SUSE SLES12 Security Update : MozillaFirefox (SUSE-SU-2020:3548-1)	Nessus	SuSE Local Security Checks	12/9/2020	12/5/2022	high

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