The remote CentOS Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the CESA-2021:0657 advisory.

  - Mozilla: Content Security Policy violation report could have contained the destination of a redirect     (CVE-2021-23968, CVE-2021-23969)

  - Mozilla: MediaError message property could have leaked information about cross-origin resources     (CVE-2021-23973)

  - Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8 (CVE-2021-23978)

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-2021:0656 advisory.

  - If Content Security Policy blocked frame navigation, the full destination of a redirect served in the     frame was reported in the violation report; as opposed to the original frame URI. This could be used to     leak sensitive information contained in such URIs. This vulnerability affects Firefox < 86, Thunderbird <     78.8, and Firefox ESR < 78.8. (CVE-2021-23968)

  - As specified in the W3C Content Security Policy draft, when creating a violation report, User agents need     to ensure that the source file is the URL requested by the page, pre-redirects. If that's not possible,     user agents need to strip the URL down to an origin to avoid unintentional leakage. Under certain types     of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was     fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird <     78.8, and Firefox ESR < 78.8. (CVE-2021-23969)

  - When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted,     and the content of that error may have revealed information about the resource. This vulnerability affects     Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8. (CVE-2021-23973)

  - Mozilla developers reported memory safety bugs present in Firefox 85 and Firefox ESR 78.7. 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 < 86, Thunderbird < 78.8, and     Firefox ESR < 78.8. (CVE-2021-23978)

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

Multiple security issues were discovered in Thunderbird, which could result in the execution of arbitrary code or information disclosure.

This update for MozillaFirefox fixes the following issues :

Firefox Extended Support Release 78.8.0 ESR

  - Fixed: Various stability, functionality, and security     fixes MFSA 2021-08 (bsc#1182614)

  - CVE-2021-23969: Content Security Policy violation report     could have contained the destination of a redirect

  - CVE-2021-23968: Content Security Policy violation report     could have contained the destination of a redirect

  - CVE-2021-23973: MediaError message property could have     leaked information about cross-origin resources

  - CVE-2021-23978: Memory safety bugs fixed in Firefox 86     and Firefox ESR 78.8

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.

This update for MozillaThunderbird fixes the following issues :

  - Mozilla Thunderbird 78.8

  - fixed: Importing an address book from a CSV file always     reported an error

  - fixed: Security information for S/MIME messages was not     displayed correctly prior to a draft being saved

  - fixed: Calendar: FileLink UI fixes for Caldav calendars

  - fixed: Recurring tasks were always marked incomplete;
    unable to use filters

  - fixed: Various UI widgets not working

  - fixed: Dark theme improvements

  - fixed: Extension manager was missing link to addon     support web page

  - fixed: Various security fixes MFSA 2021-09 (bsc#1182614)

  - CVE-2021-23969: Content Security Policy violation report     could have contained the destination of a redirect

  - CVE-2021-23968: Content Security Policy violation report     could have contained the destination of a redirect

  - CVE-2021-23973: MediaError message property could have     leaked information about cross-origin resources

  - CVE-2021-23978: Memory safety bugs fixed in Thunderbird     78.8

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

The version of thunderbird installed on the remote host is prior to 78.8.0-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1618 advisory.

    If Content Security Policy blocked frame navigation, the full destination of a redirect served in the     frame was reported in the violation report; as opposed to the original frame URI. This could be used to     leak sensitive information contained in such URIs. This vulnerability affects Firefox < 86, Thunderbird <     78.8, and Firefox ESR < 78.8. (CVE-2021-23968)

    As specified in the W3C Content Security Policy draft, when creating a violation report, User agents need     to ensure that the source file is the URL requested by the page, pre-redirects. If that's not possible,     user agents need to strip the URL down to an origin to avoid unintentional leakage. Under certain types     of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was     fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird <     78.8, and Firefox ESR < 78.8. (CVE-2021-23969)

    When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted,     and the content of that error may have revealed information about the resource. This vulnerability affects     Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8. (CVE-2021-23973)

    Mozilla developers reported memory safety bugs present in Firefox 85 and Firefox ESR 78.7. 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 < 86, Thunderbird < 78.8, and     Firefox ESR < 78.8. (CVE-2021-23978)

Tenable has extracted the preceding description block directly from the tested product 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 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2021-1561:05 advisory.

    * Mozilla: Content Security Policy violation report could have contained the destination of a redirect     (CVE-2021-23968)
      * Mozilla: Content Security Policy violation report could have contained the destination of a redirect     (CVE-2021-23969)
      * Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8 (CVE-2021-23978)
      * Mozilla: MediaError message property could have leaked information about cross-origin resources     (CVE-2021-23973)

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 4 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2021-1566:06 advisory.

    * Mozilla: Content Security Policy violation report could have contained the     destination of a redirect (CVE-2021-23968)
    * Mozilla: Content Security Policy violation report could have contained the     destination of a redirect (CVE-2021-23969)
    * Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8     (CVE-2021-23978)
    * Mozilla: MediaError message property could have leaked information about     cross-origin resources (CVE-2021-23973)     CVE(s):
    CVE-2021-23968     CVE-2021-23969     CVE-2021-23973     CVE-2021-23978

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 version of Firefox ESR installed on the remote Windows host is prior to 78.8. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-08 advisory.

  - Mozilla developers Alexis Beingessner, Tyson Smith, Nika Layzell, and Mats Palmgren reported memory safety     bugs present in Firefox 85 and Firefox ESR 78.7. 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-2021-23978)

  - As specified in the W3C Content Security Policy draft, when creating a violation report, User agents need     to ensure that the source file is the URL requested by the page, pre-redirects. If thats not possible,     user agents need to strip the URL down to an origin to avoid unintentional leakage. Under certain types     of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was     fixed to be the redirect destination's origin. (CVE-2021-23969)

  - If Content Security Policy blocked frame navigation, the full destination of a redirect served in the     frame was reported in the violation report; as opposed to the original frame URI. This could be used to     leak sensitive information contained in such URIs. (CVE-2021-23968)

  - When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted,     and the content of that error may have revealed information about the resource. (CVE-2021-23973)

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
146872	CentOS 8 : thunderbird (CESA-2021:0657)	Nessus	CentOS Local Security Checks	2/27/2021	3/23/2021	high
146882	CentOS 7 : firefox (RHSA-2021:0656)	Nessus	CentOS Local Security Checks	2/27/2021	10/9/2024	high
146942	Debian DSA-4866-1 : thunderbird - security update	Nessus	Debian Local Security Checks	3/2/2021	3/8/2021	high
146946	SUSE SLED15 / SLES15 Security Update : MozillaFirefox (SUSE-SU-2021:0659-1)	Nessus	SuSE Local Security Checks	3/2/2021	6/3/2021	high
147173	openSUSE Security Update : MozillaThunderbird (openSUSE-2021-387)	Nessus	SuSE Local Security Checks	3/8/2021	1/12/2024	high
147908	Amazon Linux 2 : thunderbird (ALAS-2021-1618)	Nessus	Amazon Linux Local Security Checks	3/19/2021	12/11/2024	high
293798	MiracleLinux 7 : firefox-78.8.0-1.0.1.el7.AXS7 (AXSA:2021-1561:05)	Nessus	Miracle Linux Local Security Checks	1/20/2026	1/20/2026	high
294295	MiracleLinux 4 : firefox-78.8.0-1.0.1.AXS4 (AXSA:2021-1566:06)	Nessus	Miracle Linux Local Security Checks	1/20/2026	1/20/2026	high
146781	Mozilla Firefox ESR < 78.8	Nessus	Windows	2/23/2021	11/18/2025	high

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