The remote Scientific Linux 6 host has a package installed that is affected by multiple vulnerabilities as referenced in the SLSA-2020:5257-1 advisory.

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

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

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

  - 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)

Note that Nessus has not tested for this issue 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-2020:5235 advisory.

  - 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)

  - 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)

  - 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)

  - 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)

  - 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)

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 83.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-50 advisory, including the following:

  - Mozilla developers reported memory safety bugs present in Firefox 82. 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. (CVE-2020-26969)

  - 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)

  - 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)

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

The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 78.5. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-52 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 MozillaThunderbird fixes the following issues :

TODO

  - Mozilla Thunderbird 78.5.0

  - new: OpenPGP: Added option to disable attaching the     public key to a signed message (bmo#1654950)

  - new: MailExtensions: 'compose_attachments' context added     to Menus API (bmo#1670822)

  - new: MailExtensions: Menus API now available on     displayed messages (bmo#1670825)

  - changed: MailExtensions: browser.tabs.create will now     wait for 'mail-delayed-startup-finished' event     (bmo#1674407)

  - fixed: OpenPGP: Support for inline PGP messages improved     (bmo#1672851)

  - fixed: OpenPGP: Message security dialog showed     unverified keys as unavailable (bmo#1675285)

  - fixed: Chat: New chat contact menu item did not function     (bmo#1663321)

  - fixed: Various theme and usability improvements     (bmo#1673861)

  - fixed: Various security fixes MFSA 2020-52 (bsc#1178894)

  - CVE-2020-26951 (bmo#1667113) Parsing mismatches could     confuse and bypass security sanitizer for chrome     privileged code

  - CVE-2020-16012 (bmo#1642028) Variable time processing of     cross-origin images during drawImage calls

  - CVE-2020-26953 (bmo#1656741) Fullscreen could be enabled     without displaying the security UI

  - CVE-2020-26956 (bmo#1666300) XSS through paste (manual     and clipboard API)

  - CVE-2020-26958 (bmo#1669355) Requests intercepted     through ServiceWorkers lacked MIME type restrictions

  - CVE-2020-26959 (bmo#1669466) Use-after-free in     WebRequestService

  - CVE-2020-26960 (bmo#1670358) Potential use-after-free in     uses of nsTArray

  - CVE-2020-15999 (bmo#1672223) Heap buffer overflow in     freetype

  - CVE-2020-26961 (bmo#1672528) DoH did not filter IPv4     mapped IP Addresses

  - CVE-2020-26965 (bmo#1661617) Software keyboards may have     remembered typed passwords

  - CVE-2020-26966 (bmo#1663571) Single-word search queries     were also broadcast to local network

  - CVE-2020-26968 (bmo#1551615, bmo#1607762, bmo#1656697,     bmo#1657739, bmo#1660236, bmo#1667912, bmo#1671479,     bmo#1671923) Memory safety bugs fixed in Thunderbird     78.5

  - Mozilla Thunderbird 78.4.3 

  - fixed: User interface was inconsistent when switching     from the default theme to the dark theme and back to the     default theme (bmo#1659282)

  - fixed: Email subject would disappear when hovering over     it with the mouse when using Windows 7 Classic theme     (bmo#1675970)

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

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.

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has thunderbird 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 holding a reference to the eval() function from an about:blank window, a malicious webpage could have     gained access to the InstallTrigger object which would allow them to prompt the user to install an     extension. Combined with user confusion, this could result in an unintended or malicious extension being     installed. This vulnerability affects Firefox < 80, Thunderbird < 78.2, Thunderbird < 68.12, Firefox ESR <     68.12, Firefox ESR < 78.2, and Firefox for Android < 80. (CVE-2020-15664)

  - When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to     be notified. This results in a use-after-free and we presume that with enough effort it could have been     exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.12 and Thunderbird < 68.12.
    (CVE-2020-15669)

  - 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)

  - Certain blit values provided by the user were not properly constrained leading to a heap buffer overflow     on some video drivers. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR <     78.6. (CVE-2020-26971)

  - Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This     could have been used as a sanitizer bypass. This vulnerability affects Firefox < 84, Thunderbird < 78.6,     and Firefox ESR < 78.6. (CVE-2020-26973)

  - When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly     cast to the wrong type. This resulted in a heap user-after-free, memory corruption, and a potentially     exploitable crash. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.
    (CVE-2020-26974)

  - Using techniques that built on the slipstream research, a malicious webpage could have exposed both an     internal network's hosts as well as services running on the user's local machine. This vulnerability     affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6. (CVE-2020-26978)

  - Uninitialized Use in V8 in Google Chrome prior to 87.0.4280.88 allowed a remote attacker to obtain     potentially sensitive information from process memory via a crafted HTML page. (CVE-2020-16042)

  - When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that     is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to     stack corruption that may be exploitable. This vulnerability affects Thunderbird < 78.5.1.
    (CVE-2020-26970)

  - When an extension with the proxy permission registered to receive , the proxy.onRequest callback     was not triggered for view-source URLs. While web content cannot navigate to such URLs, a user opening     View Source could have inadvertently leaked their IP address. This vulnerability affects Firefox < 84,     Thunderbird < 78.6, and Firefox ESR < 78.6. (CVE-2020-35111)

  - Mozilla developers reported memory safety bugs present in Firefox 83 and Firefox ESR 78.5. 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 < 84, Thunderbird < 78.6, and     Firefox ESR < 78.6. (CVE-2020-35113)

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

ID	Name	Product	Family	Published	Updated	Severity
143371	Scientific Linux Security Update : firefox on SL6.x i686/x86_64 (2020:5257)	Nessus	Scientific Linux Local Security Checks	12/1/2020	2/7/2024	high
143910	CentOS 7 : thunderbird (RHSA-2020:5235)	Nessus	CentOS Local Security Checks	12/9/2020	10/9/2024	high
142910	Mozilla Firefox < 83.0	Nessus	Windows	11/17/2020	2/6/2025	critical
143059	Mozilla Thunderbird < 78.5	Nessus	MacOS X Local Security Checks	11/18/2020	2/6/2025	critical
143540	openSUSE Security Update : MozillaThunderbird (openSUSE-2020-2187)	Nessus	SuSE Local Security Checks	12/8/2020	2/6/2025	critical
143723	SUSE SLED15 / SLES15 Security Update : MozillaFirefox (SUSE-SU-2020:3458-1)	Nessus	SuSE Local Security Checks	12/9/2020	2/6/2025	critical
143745	SUSE SLED15 / SLES15 Security Update : MozillaFirefox (SUSE-SU-2020:3383-1)	Nessus	SuSE Local Security Checks	12/9/2020	2/6/2025	critical
149335	NewStart CGSL CORE 5.04 / MAIN 5.04 : thunderbird Multiple Vulnerabilities (NS-SA-2021-0025)	Nessus	NewStart CGSL Local Security Checks	5/7/2021	5/10/2022	critical

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