A locally-installed hostile program could send `WM_COPYDATA` messages that Firefox would process incorrectly, leading to an out-of-bounds read. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 78.11, Firefox < 89, and Firefox ESR < 78.11.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A locally-installed hostile program could send `WM_COPYDATA` messages that Firefox would process     incorrectly, leading to an out-of-bounds read. *This bug only affects Firefox on Windows. Other operating     systems are unaffected.*. This vulnerability affects Thunderbird < 78.11, Firefox < 89, and Firefox ESR <     78.11. (CVE-2021-29964)

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

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-2021:2003-1 advisory.

  - A locally-installed hostile program could send `WM_COPYDATA` messages that Firefox would process     incorrectly, leading to an out-of-bounds read. *This bug only affects Firefox on Windows. Other operating     systems are unaffected.*. This vulnerability affects Thunderbird < 78.11, Firefox < 89, and Firefox ESR <     78.11. (CVE-2021-29964)

  - Mozilla developers reported memory safety bugs present in Firefox 88 and Firefox ESR 78.11. 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 < 78.11, Firefox < 89, and     Firefox ESR < 78.11. (CVE-2021-29967)

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 SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:0910-1 advisory.

  - A locally-installed hostile program could send `WM_COPYDATA` messages that Firefox would process     incorrectly, leading to an out-of-bounds read. *This bug only affects Firefox on Windows. Other operating     systems are unaffected.*. This vulnerability affects Thunderbird < 78.11, Firefox < 89, and Firefox ESR <     78.11. (CVE-2021-29964)

  - Mozilla developers reported memory safety bugs present in Firefox 88 and Firefox ESR 78.11. 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 < 78.11, Firefox < 89, and     Firefox ESR < 78.11. (CVE-2021-29967)

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-2021:2003-1 advisory.

    Mozilla Thunderbird 78.11 (bsc#1186696)

    Security issues fixed:

    - CVE-2021-29964: Out of bounds-read when parsing a `WM_COPYDATA` message
    - CVE-2021-29967: Memory safety bugs fixed in Thunderbird 78.11

    General improvements:

    - OpenPGP could not be disabled for an account if a key was previously configured
    - Recipients were unable to decrypt some messages when the sender had changed the message encryption from     OpenPGP to S/MIME
    - Contacts moved between CardDAV address books were not synced to the new server
    - CardDAV compatibility fixes for Google Contacts
    - Folder pane had no clear indication of focus on macOS

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 macOS or Mac OS X host is prior to 78.11. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-26 advisory.

  - Mozilla developers Gabriele Svelto, Anny Gakhokidze, Alexandru Michis, Christian Holler reported memory     safety bugs present in Thunderbird 78.11. 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-2021-29967)

  - A locally-installed hostile program could send `WMCOPYDATA` messages that Thunderbird would processing     incorrectly, leading to an out-of-bounds read.  This bug only affects Thunderbird on Windows. Other     operating systems are unaffected. (CVE-2021-29964)

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 78.11. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-26 advisory.

  - Mozilla developers Gabriele Svelto, Anny Gakhokidze, Alexandru Michis, Christian Holler reported memory     safety bugs present in Thunderbird 78.11. 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-2021-29967)

  - A locally-installed hostile program could send `WMCOPYDATA` messages that Thunderbird would processing     incorrectly, leading to an out-of-bounds read.  This bug only affects Thunderbird on Windows. Other     operating systems are unaffected. (CVE-2021-29964)

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 ESR installed on the remote Windows host is prior to 78.11. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-24 advisory.

  - Mozilla developers Gabriele Svelto, Anny Gakhokidze, Alexandru Michis, Christian Holler reported memory     safety bugs present in Firefox 88 and Firefox ESR 78.10. 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-2021-29967)

  - A locally-installed hostile program could send `WMCOPYDATA` messages that Firefox would processing     incorrectly, leading to an out-of-bounds read.  This bug only affects Firefox on Windows. Other operating     systems are unaffected. (CVE-2021-29964)

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 ESR installed on the remote macOS or Mac OS X host is prior to 78.11. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-24 advisory.

  - Mozilla developers Gabriele Svelto, Anny Gakhokidze, Alexandru Michis, Christian Holler reported memory     safety bugs present in Firefox 88 and Firefox ESR 78.10. 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-2021-29967)

  - A locally-installed hostile program could send `WMCOPYDATA` messages that Firefox would processing     incorrectly, leading to an out-of-bounds read.  This bug only affects Firefox on Windows. Other operating     systems are unaffected. (CVE-2021-29964)

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 89.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-23 advisory.

  - Mozilla developers Christian Holler, Anny Gakhokidze, Alexandru Michis, Gabriele Svelto reported memory     safety bugs present in Firefox 88 and Firefox ESR 78.11. 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-2021-29967)

  - A malicious website that causes an HTTP Authentication dialog to be spawned could trick the built-in     password manager to suggest passwords for the currently active website instead of the website that     triggered the dialog.  This bug only affects Firefox for Android. Other operating systems are unaffected.
    (CVE-2021-29965)

  - Firefox used to cache the last filename used for printing a file. When generating a filename for printing,     Firefox usually suggests the web page title. The caching and suggestion techniques combined may have lead     to the title of a website visited during private browsing mode being stored on disk. (CVE-2021-29960)

  - When styling and rendering an oversized `<select>` element, Firefox did not apply correct clipping     which allowed an attacker to paint over the user interface. (CVE-2021-29961)

  - Address bar search suggestions in private browsing mode were re-using session data from normal mode.  This     bug only affects Firefox for Android. Other operating systems are unaffected. (CVE-2021-29963)

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 89.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-23 advisory.

  - Mozilla developers Christian Holler, Anny Gakhokidze, Alexandru Michis, Gabriele Svelto reported memory     safety bugs present in Firefox 88 and Firefox ESR 78.11. 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-2021-29967)

  - A malicious website that causes an HTTP Authentication dialog to be spawned could trick the built-in     password manager to suggest passwords for the currently active website instead of the website that     triggered the dialog.  This bug only affects Firefox for Android. Other operating systems are unaffected.
    (CVE-2021-29965)

  - Firefox used to cache the last filename used for printing a file. When generating a filename for printing,     Firefox usually suggests the web page title. The caching and suggestion techniques combined may have lead     to the title of a website visited during private browsing mode being stored on disk. (CVE-2021-29960)

  - When styling and rendering an oversized `<select>` element, Firefox did not apply correct clipping     which allowed an attacker to paint over the user interface. (CVE-2021-29961)

  - Address bar search suggestions in private browsing mode were re-using session data from normal mode.  This     bug only affects Firefox for Android. Other operating systems are unaffected. (CVE-2021-29963)

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
245147	Linux Distros Unpatched Vulnerability : CVE-2021-29964	Nessus	Misc.	high
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
151686	openSUSE 15 Security Update : MozillaThunderbird (openSUSE-SU-2021:2003-1)	Nessus	SuSE Local Security Checks	high
151069	openSUSE 15 Security Update : MozillaThunderbird (openSUSE-SU-2021:0910-1)	Nessus	SuSE Local Security Checks	high
150871	SUSE SLED15: MozillaThunderbird / MozillaThunderbird-translations-common / etc (SUSE-SU-2021:2003-1)	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
150158	Mozilla Thunderbird < 78.11	Nessus	MacOS X Local Security Checks	high
150157	Mozilla Thunderbird < 78.11	Nessus	Windows	high
150122	Mozilla Firefox ESR < 78.11	Nessus	Windows	high
150121	Mozilla Firefox ESR < 78.11	Nessus	MacOS X Local Security Checks	high
150120	Mozilla Firefox < 89.0	Nessus	MacOS X Local Security Checks	high
150119	Mozilla Firefox < 89.0	Nessus	Windows	high

Detections

Analytics

CVE-2021-29964

high

Tenable Plugins

high

critical

critical

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