The remote host is affected by the vulnerability described in GLSA-202208-14 (Mozilla Thunderbird: Multiple Vulnerabilities)

  -  Please review the referenced CVE identifiers for details.  (CVE-2021-29967, CVE-2021-29969,     CVE-2021-29970, CVE-2021-29976, CVE-2021-29980, CVE-2021-29984, CVE-2021-29985, CVE-2021-29986,     CVE-2021-29988, CVE-2021-29989, CVE-2021-30547, CVE-2021-38492, CVE-2021-38493, CVE-2021-38495,     CVE-2021-38503, CVE-2021-38504, CVE-2021-38506, CVE-2021-38507, CVE-2021-38508, CVE-2021-38509,     CVE-2021-40529, CVE-2021-4129, CVE-2021-4140, CVE-2021-43528, CVE-2021-43529, CVE-2021-43536,     CVE-2021-43537, CVE-2021-43538, CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543,     CVE-2021-43545, CVE-2021-43546, CVE-2022-0566, CVE-2022-1196, CVE-2022-1197, CVE-2022-1520, CVE-2022-1529,     CVE-2022-1802, CVE-2022-1834, CVE-2022-2200, CVE-2022-2226, CVE-2022-22737, CVE-2022-22738,     CVE-2022-22739, CVE-2022-22740, CVE-2022-22741, CVE-2022-22742, CVE-2022-22743, CVE-2022-22745,     CVE-2022-22747, CVE-2022-22748, CVE-2022-22751, CVE-2022-22754, CVE-2022-22756, CVE-2022-22759,     CVE-2022-22760, CVE-2022-22761, CVE-2022-22763, CVE-2022-22764, CVE-2022-24713, CVE-2022-26381,     CVE-2022-26383, CVE-2022-26384, CVE-2022-26386, CVE-2022-26387, CVE-2022-26485, CVE-2022-26486,     CVE-2022-28281, CVE-2022-28282, CVE-2022-28285, CVE-2022-28286, CVE-2022-28289, CVE-2022-29909,     CVE-2022-29911, CVE-2022-29912, CVE-2022-29913, CVE-2022-29914, CVE-2022-29916, CVE-2022-29917,     CVE-2022-31736, CVE-2022-31737, CVE-2022-31738, CVE-2022-31740, CVE-2022-31741, CVE-2022-31742,     CVE-2022-31747, CVE-2022-34468, CVE-2022-34470, CVE-2022-34472, CVE-2022-34478, CVE-2022-34479,     CVE-2022-34481, CVE-2022-34484, CVE-2022-36318, CVE-2022-36319)

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

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:1577-1 advisory.

  - Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corruption     and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91,     Firefox ESR < 78.13, and Firefox < 91. (CVE-2021-29980)

  - An issue present in lowering/register allocation could have led to obscure but deterministic register     confusion failures in JITted code that would lead to a potentially exploitable crash. This vulnerability     affects Firefox < 91 and Thunderbird < 91. (CVE-2021-29981)

  - Due to incorrect JIT optimization, we incorrectly interpreted data from the wrong type of object,     resulting in the potential leak of a single bit of memory. This vulnerability affects Firefox < 91 and     Thunderbird < 91. (CVE-2021-29982)

  - Firefox for Android could get stuck in fullscreen mode and not exit it even after normal interactions that     should cause it to exit. *Note: This issue only affected Firefox for Android. Other operating systems are     unaffected.*. This vulnerability affects Firefox < 91. (CVE-2021-29983)

  - Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly     considered during garbage collection. This led to memory corruption and a potentially exploitable crash.
    This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
    (CVE-2021-29984)

  - A use-after-free vulnerability in media channels could have led to memory corruption and a potentially     exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13,     and Firefox < 91. (CVE-2021-29985)

  - A suspected race condition when calling getaddrinfo led to memory corruption and a potentially exploitable     crash. *Note: This issue only affected Linux operating systems. Other operating systems are unaffected.*     This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
    (CVE-2021-29986)

  - After requesting multiple permissions, and closing the first permission panel, subsequent permission     panels will be displayed in a different position but still record a click in the default location, making     it possible to trick a user into accepting a permission they did not want to. *This bug only affects     Firefox on Linux. Other operating systems are unaffected.*. This vulnerability affects Firefox < 91 and     Thunderbird < 91. (CVE-2021-29987)

  - Firefox incorrectly treated an inline list-item element as a block element, resulting in an out of bounds     read or memory corruption, and a potentially exploitable crash. This vulnerability affects Thunderbird <     78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91. (CVE-2021-29988)

  - Mozilla developers reported memory safety bugs present in Firefox 90 and Firefox ESR 78.12. 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 Thunderbird < 78.13, Firefox ESR < 78.13,     and Firefox < 91. (CVE-2021-29989)

  - Mozilla developers and community members reported memory safety bugs present in Firefox 90. 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 < 91. (CVE-2021-29990)

  - Firefox incorrectly accepted a newline in a HTTP/3 header, interpretting it as two separate headers. This     allowed for a header splitting attack against servers using HTTP/3. This vulnerability affects Firefox <     91.0.1 and Thunderbird < 91.0.1. (CVE-2021-29991)

  - When delegating navigations to the operating system, Firefox would accept the `mk` scheme which might     allow attackers to launch pages and execute scripts in Internet Explorer in unprivileged mode. *This bug     only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects     Firefox < 92, Thunderbird < 91.1, Thunderbird < 78.14, Firefox ESR < 78.14, and Firefox ESR < 91.1.
    (CVE-2021-38492)

  - Mozilla developers reported memory safety bugs present in Thunderbird 78.13.0. 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 Thunderbird < 91.1 and Firefox ESR < 91.1.
    (CVE-2021-38495)

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

The remote MiracleLinux 4 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2021-2374:16 advisory.

    * Mozilla: Uninitialized memory in a canvas object could have led to memory corruption (CVE-2021-29980)
      * Mozilla: Incorrect instruction reordering during JIT optimization (CVE-2021-29984)
      * Mozilla: Race condition when resolving DNS names could have led to memory corruption (CVE-2021-29986)
      * Mozilla: Memory corruption as a result of incorrect style treatment (CVE-2021-29988)
      * Mozilla: Memory safety bugs fixed in Thunderbird 78.13 (CVE-2021-29989)
      * Mozilla: Use-after-free media channels (CVE-2021-29985)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 MiracleLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2021-2370:15 advisory.

    * Mozilla: Uninitialized memory in a canvas object could have led to memory corruption (CVE-2021-29980)
      * Mozilla: Incorrect instruction reordering during JIT optimization (CVE-2021-29984)
      * Mozilla: Race condition when resolving DNS names could have led to memory corruption (CVE-2021-29986)
      * Mozilla: Memory corruption as a result of incorrect style treatment (CVE-2021-29988)
      * Mozilla: Memory safety bugs fixed in Thunderbird 78.13 (CVE-2021-29989)
      * Mozilla: Use-after-free media channels (CVE-2021-29985)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A suspected race condition when calling getaddrinfo led to memory corruption and a potentially exploitable     crash. *Note: This issue only affected Linux operating systems. Other operating systems are unaffected.*     This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
    (CVE-2021-29986)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 78.13. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-34 advisory.

  - Mozilla developers Christoph Kerschbaumer, Simon Giesecke, Sandor Molnar, and Olli Pettay reported memory     safety bugs present in Firefox 90 and Firefox ESR 78.12. 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-2021-29989)

  - A suspected race condition when calling <code>getaddrinfo</code> led to memory corruption and a     potentially exploitable crash.  Note: This issue only affected Linux operating systems. Other operating     systems are unaffected. (CVE-2021-29986)

  - Firefox incorrectly treated an inline list-item element as a block element, resulting in an out of bounds     read or memory corruption, and a potentially exploitable crash. (CVE-2021-29988)

  - Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly     considered during garbage collection. This led to memory corruption and a potentially exploitable crash.
    (CVE-2021-29984)

  - Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corruption     and a potentially exploitable crash. (CVE-2021-29980)

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 78.13. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-35 advisory.

  - Mozilla developers Christoph Kerschbaumer, Simon Giesecke, Sandor Molnar, and Olli Pettay reported memory     safety bugs present in Thunderbird 78.12. 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-2021-29989)

  - A suspected race condition when calling <code>getaddrinfo</code> led to memory corruption and a     potentially exploitable crash.  Note: This issue only affected Linux operating systems. Other operating     systems are unaffected. (CVE-2021-29986)

  - Thunderbird incorrectly treated an inline list-item element as a block element, resulting in an out of     bounds read or memory corruption, and a potentially exploitable crash. (CVE-2021-29988)

  - Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly     considered during garbage collection. This led to memory corruption and a potentially exploitable crash.
    (CVE-2021-29984)

  - Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corruption     and a potentially exploitable crash. (CVE-2021-29980)

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 macOS or Mac OS X host is prior to 91.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-36 advisory.

  - Mozilla developers Kershaw Chang, Philipp, Chris Peterson, Sebastian Hengst, Christoph Kerschbaumer, Olli     Pettay, Sandor Molnar, and Simon Giesecke reported memory safety bugs present in versions of Thunderbird     prior to 91. 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-2021-29989)

  - A suspected race condition when calling <code>getaddrinfo</code> led to memory corruption and a     potentially exploitable crash.  Note: This issue only affected Linux operating systems. Other operating     systems are unaffected. (CVE-2021-29986)

  - An issue present in lowering/register allocation could have led to obscure but deterministic register     confusion failures in JITted code that would lead to a potentially exploitable crash. (CVE-2021-29981)

  - Thunderbird incorrectly treated an inline list-item element as a block element, resulting in an out of     bounds read or memory corruption, and a potentially exploitable crash. (CVE-2021-29988)

  - Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly     considered during garbage collection. This led to memory corruption and a potentially exploitable crash.
    (CVE-2021-29984)

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

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5037-1 advisory.

    Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially     crafted website, an attacker could potentially exploit these to cause a denial of service, obtain     sensitive information, trick a user into accepting unwanted permissions, or execute arbitrary code.

Tenable has extracted the preceding description block directly from the Ubuntu 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 Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-4959 advisory.

    Multiple security issues were discovered in Thunderbird, which could result in the execution of arbitrary     code. For the stable distribution (bullseye), these problems have been fixed in version     1:78.13.0-1~deb11u1. For the oldstable distribution (buster), these problems have been fixed in version     1:78.13.0-1~deb10u1. We recommend that you upgrade your thunderbird packages. For the detailed security     status of thunderbird please refer to its security tracker page at: https://security-     tracker.debian.org/tracker/thunderbird

Tenable has extracted the preceding description block directly from the Debian 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-2021:3154 advisory.

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

    This update upgrades Firefox to version 78.13.0 ESR.

    Security Fix(es):

    * Mozilla: Uninitialized memory in a canvas object could have led to memory corruption (CVE-2021-29980)

    * Mozilla: Incorrect instruction reordering during JIT optimization (CVE-2021-29984)

    * Mozilla: Race condition when resolving DNS names could have led to memory corruption (CVE-2021-29986)

    * Mozilla: Memory corruption as a result of incorrect style treatment (CVE-2021-29988)

    * Mozilla: Memory safety bugs fixed in Thunderbird 78.13 (CVE-2021-29989)

    * Mozilla: Use-after-free media channels (CVE-2021-29985)

    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 SUSE Linux SLED15 / SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2774-1 advisory.

  - Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corruption     and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91,     Firefox ESR < 78.13, and Firefox < 91. (CVE-2021-29980)

  - Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly     considered during garbage collection. This led to memory corruption and a potentially exploitable crash.
    This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
    (CVE-2021-29984)

  - A use-after-free vulnerability in media channels could have led to memory corruption and a potentially     exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13,     and Firefox < 91. (CVE-2021-29985)

  - A suspected race condition when calling getaddrinfo led to memory corruption and a potentially exploitable     crash. *Note: This issue only affected Linux operating systems. Other operating systems are unaffected.*     This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
    (CVE-2021-29986)

  - Firefox incorrectly treated an inline list-item element as a block element, resulting in an out of bounds     read or memory corruption, and a potentially exploitable crash. This vulnerability affects Thunderbird <     78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91. (CVE-2021-29988)

  - Mozilla developers reported memory safety bugs present in Firefox 90 and Firefox ESR 78.12. 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 Thunderbird < 78.13, Firefox ESR < 78.13,     and Firefox < 91. (CVE-2021-29989)

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
163986	GLSA-202208-14 : Mozilla Thunderbird: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	8/10/2022	10/16/2023	critical
160875	SUSE SLES15 Security Update : MozillaFirefox (SUSE-SU-2022:1577-1)	Nessus	SuSE Local Security Checks	5/10/2022	3/6/2025	high
293826	MiracleLinux 4 : thunderbird-78.13.0-1.0.1.AXS4 (AXSA:2021-2374:16)	Nessus	Miracle Linux Local Security Checks	1/20/2026	1/20/2026	high
293912	MiracleLinux 8 : thunderbird-78.13.0-1.el8.ML.1 (AXSA:2021-2370:15)	Nessus	Miracle Linux Local Security Checks	1/20/2026	1/20/2026	high
244755	Linux Distros Unpatched Vulnerability : CVE-2021-29986	Nessus	Misc.	8/7/2025	8/7/2025	high
152415	Mozilla Firefox ESR < 78.13	Nessus	MacOS X Local Security Checks	8/10/2021	11/18/2025	high
152452	Mozilla Thunderbird < 78.13	Nessus	Windows	8/11/2021	11/18/2025	high
152504	Mozilla Thunderbird < 91.0	Nessus	MacOS X Local Security Checks	8/11/2021	11/18/2025	high
152508	Ubuntu 18.04 LTS / 20.04 LTS : Firefox vulnerabilities (USN-5037-1)	Nessus	Ubuntu Local Security Checks	8/12/2021	8/27/2024	high
152568	Debian DSA-4959-1 : thunderbird - security update	Nessus	Debian Local Security Checks	8/15/2021	1/24/2025	high
152581	RHEL 7 : firefox (RHSA-2021:3154)	Nessus	Red Hat Local Security Checks	8/16/2021	11/7/2024	high
152690	SUSE SLED15 / SLES15 Security Update : MozillaFirefox (SUSE-SU-2021:2774-1)	Nessus	SuSE Local Security Checks	8/20/2021	7/13/2023	high

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