The Mozilla Maintenance Service granted SERVICE_START access to BUILTIN|Users which, in a domain network, grants normal remote users access to start or stop the service. This could be used to prevent the browser update service from operating (if an attacker spammed the 'Stop' command); but also exposed attack surface in the maintenance service. *Note: This issue only affected Windows operating systems older than Win 10 build 1709. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 78.10.1, Firefox < 87, and Firefox ESR < 78.10.1.

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass
    restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects
    Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38503)

  - Further techniques that built on the slipstream research combined with 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 < 85. (CVE-2021-23961)

  - A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound
    write. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
    (CVE-2021-23994)

  - When Responsive Design Mode was enabled, it used references to objects that were previously freed. We
    presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability
    affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88. (CVE-2021-23995)

  - Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon
    from an HTTPS page. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
    (CVE-2021-23998)

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:1854-1 advisory.

  - Thunderbird unprotects a secret OpenPGP key prior to using it for a decryption, signing or key import     task. If the task runs into a failure, the secret key may remain in memory in its unprotected state. This     vulnerability affects Thunderbird < 78.8.1. (CVE-2021-29950)

  - The Mozilla Maintenance Service granted SERVICE_START access to BUILTIN|Users which, in a domain network,     grants normal remote users access to start or stop the service. This could be used to prevent the browser     update service from operating (if an attacker spammed the 'Stop' command); but also exposed attack surface     in the maintenance service. *Note: This issue only affected Windows operating systems older than Win 10     build 1709. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 78.10.1,     Firefox < 87, and Firefox ESR < 78.10.1. (CVE-2021-29951)

  - OpenPGP secret keys that were imported using Thunderbird version 78.8.1 up to version 78.10.1 were stored     unencrypted on the user's local disk. The master password protection was inactive for those keys. Version     78.10.2 will restore the protection mechanism for newly imported keys, and will automatically protect keys     that had been imported using affected Thunderbird versions. This vulnerability affects Thunderbird <     78.10.2. (CVE-2021-29956)

  - If a MIME encoded email contains an OpenPGP inline signed or encrypted message part, but also contains an     additional unprotected part, Thunderbird did not indicate that only parts of the message are protected.
    This vulnerability affects Thunderbird < 78.10.2. (CVE-2021-29957)

Note that Nessus has not tested for this issue 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-2021:1854-1 advisory.

    - Mozilla Thunderbird 78.10.2
    - CVE-2021-29957: Fixed partial protection of inline OpenPGP message not indicated (bsc#1186198).
    - CVE-2021-29956: Fixed Thunderbird stored OpenPGP secret keys without master password protection     (bsc#1186199).
    - CVE-2021-29951: Fixed Thunderbird Maintenance Service could have been started or stopped by domain users     (bsc#1185633).
    - CVE-2021-29950: Fixed logic issue potentially leaves key material unlocked (bsc#1185086).

Tenable has extracted the preceding description block directly from the SUSE 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 SLES11 / SLES_SAP11 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:14743-1 advisory.

    Firefox Extended Support Release 78.11.0 ESR (bsc#1186696)

      * CVE-2021-29964: Out of bounds-read when parsing a `WM_COPYDATA` message
      * CVE-2021-29967: Memory safety bugs fixed in Firefox

Tenable has extracted the preceding description block directly from the SUSE 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 SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:1919-1 advisory.

    Firefox Extended Support Release 78.11.0 ESR (bsc#1186696)

      * CVE-2021-29964: Out of bounds-read when parsing a `WM_COPYDATA` message
      * CVE-2021-29967: Memory safety bugs fixed in Firefox

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

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 78.11.0 ESR (bsc#1186696)

  - CVE-2021-29964: Out of bounds-read when parsing a     `WM_COPYDATA` message

  - CVE-2021-29967: Memory safety bugs fixed in Firefox

This update was imported from the SUSE:SLE-15-SP2:Update update project.

The remote SUSE Linux SLED12 / SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:1886-1 advisory.

    Firefox Extended Support Release 78.11.0 ESR (bsc#1186696)

      * CVE-2021-29964: Out of bounds-read when parsing a `WM_COPYDATA` message
      * CVE-2021-29967: Memory safety bugs fixed in Firefox

Tenable has extracted the preceding description block directly from the SUSE 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-2021:1884-1 advisory.

    Firefox Extended Support Release 78.11.0 ESR (bsc#1186696)

      * CVE-2021-29964: Out of bounds-read when parsing a `WM_COPYDATA` message
      * CVE-2021-29967: Memory safety bugs fixed in Firefox

Tenable has extracted the preceding description block directly from the SUSE 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 78.10.1. It is, therefore, affected by a vulnerability as referenced in the mfsa2021-19 advisory.

  - The Maintenance Service granted SERVICESTART access to <code>BUILTIN|Users</code> which, in a domain     network, grants normal remote users access to start or stop the service. This could be used to prevent the     browser update service from operating (if an attacker spammed the 'Stop' command); but also exposed attack     surface in the maintenance service. Note: This issue only affected Windows operating systems older than     Win 10 build 1709. Other operating systems are unaffected. (CVE-2021-29951)

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 78.10.1. It is, therefore, affected by a vulnerability as referenced in the mfsa2021-19 advisory.

  - The Maintenance Service granted SERVICESTART access to <code>BUILTIN|Users</code> which, in a domain     network, grants normal remote users access to start or stop the service. This could be used to prevent the     browser update service from operating (if an attacker spammed the 'Stop' command); but also exposed attack     surface in the maintenance service. Note: This issue only affected Windows operating systems older than     Win 10 build 1709. Other operating systems are unaffected. (CVE-2021-29951)

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 Firefox ESR installed on the remote Windows host is prior to 78.10.1. It is, therefore, affected by a vulnerability as referenced in the mfsa2021-18 advisory.

  - The Mozilla Maintenance Service granted SERVICESTART access to <code>BUILTIN|Users</code> which, in a     domain network, grants normal remote users access to start or stop the service. This could be used to     prevent the browser update service from operating (if an attacker spammed the 'Stop' command); but also     exposed attack surface in the maintenance service. Note: This issue only affected Windows operating     systems older than Win 10 build 1709. Other operating systems are unaffected. (CVE-2021-29951)

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 Firefox ESR installed on the remote macOS or Mac OS X host is prior to 78.10.1. It is, therefore, affected by a vulnerability as referenced in the mfsa2021-18 advisory.

  - The Mozilla Maintenance Service granted SERVICESTART access to <code>BUILTIN|Users</code> which, in a     domain network, grants normal remote users access to start or stop the service. This could be used to     prevent the browser update service from operating (if an attacker spammed the 'Stop' command); but also     exposed attack surface in the maintenance service. Note: This issue only affected Windows operating     systems older than Win 10 build 1709. Other operating systems are unaffected. (CVE-2021-29951)

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 Firefox installed on the remote macOS or Mac OS X host is prior to 87.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-10 advisory.

  - Mozilla developers Tyson Smith and Christian Holler reported memory safety bugs present in Firefox 86.
    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-2021-23988)

  - A transient execution vulnerability, named Floating Point Value Injection (FPVI) allowed an attacker to     leak arbitrary memory addresses and may have also enabled JIT type confusion attacks. (A related     vulnerability, Speculative Code Store Bypass (SCSB), did not affect Firefox.) (CVE-2021-29955)

  - A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer     used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash.
    (CVE-2021-23981)

  - The Mozilla Maintenance Service granted SERVICESTART access to <code>BUILTIN|Users</code> which, in a     domain network, grants normal remote users access to start or stop the service. This could be used to     prevent the browser update service from operating (if an attacker spammed the 'Stop' command); but also     exposed attack surface in the maintenance service. Note: This issue only affected Windows operating     systems older than Win 10 build 1709. Other operating systems are unaffected. (CVE-2021-29951)

  - Using techniques that built on the slipstream research, a malicious webpage could have scanned both an     internal network's hosts as well as services running on the user's local machine utilizing WebRTC     connections. (CVE-2021-23982)

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 87.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-10 advisory.

  - Mozilla developers Tyson Smith and Christian Holler reported memory safety bugs present in Firefox 86.
    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-2021-23988)

  - A transient execution vulnerability, named Floating Point Value Injection (FPVI) allowed an attacker to     leak arbitrary memory addresses and may have also enabled JIT type confusion attacks. (A related     vulnerability, Speculative Code Store Bypass (SCSB), did not affect Firefox.) (CVE-2021-29955)

  - A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer     used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash.
    (CVE-2021-23981)

  - The Mozilla Maintenance Service granted SERVICESTART access to <code>BUILTIN|Users</code> which, in a     domain network, grants normal remote users access to start or stop the service. This could be used to     prevent the browser update service from operating (if an attacker spammed the 'Stop' command); but also     exposed attack surface in the maintenance service. Note: This issue only affected Windows operating     systems older than Win 10 build 1709. Other operating systems are unaffected. (CVE-2021-29951)

  - Using techniques that built on the slipstream research, a malicious webpage could have scanned both an     internal network's hosts as well as services running on the user's local machine utilizing WebRTC     connections. (CVE-2021-23982)

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	Severity
427104	Alpine: thunderbird: security update to 91.3.2-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	critical
427104	Alpine: thunderbird: security update to 91.3.2-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	critical
151707	openSUSE 15 Security Update : MozillaThunderbird (openSUSE-SU-2021:1854-1)	Nessus	SuSE Local Security Checks	high
150685	SUSE SLED15: MozillaThunderbird / MozillaThunderbird-translations-common / etc (SUSE-SU-2021:1854-1)	Nessus	SuSE Local Security Checks	high
150587	SUSE SLES11: MozillaFirefox / MozillaFirefox-translations-common / etc (SUSE-SU-2021:14743-1)	Nessus	SuSE Local Security Checks	high
150456	SUSE SLES15: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2021:1919-1)	Nessus	SuSE Local Security Checks	high
150455	openSUSE Security Update : MozillaFirefox (openSUSE-2021-858)	Nessus	SuSE Local Security Checks	high
150404	SUSE SLED12: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2021:1886-1)	Nessus	SuSE Local Security Checks	high
150397	SUSE SLED15: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2021:1884-1)	Nessus	SuSE Local Security Checks	high
149257	Mozilla Thunderbird < 78.10.1	Nessus	Windows	medium
149256	Mozilla Thunderbird < 78.10.1	Nessus	MacOS X Local Security Checks	medium
149255	Mozilla Firefox ESR < 78.10.1	Nessus	Windows	medium
149254	Mozilla Firefox ESR < 78.10.1	Nessus	MacOS X Local Security Checks	medium
148015	Mozilla Firefox < 87.0	Nessus	MacOS X Local Security Checks	high
148014	Mozilla Firefox < 87.0	Nessus	Windows	high

Detections

Analytics

CVE-2021-29951

medium

Tenable Plugins

critical

critical

high

high

high

high

high

high

high

medium

medium

medium

medium

high

high