The version of Firefox ESR installed on the remote macOS or Mac OS X 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.

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

    Mozilla Thunderbird is a standalone mail and newsgroup client.

    This update upgrades Thunderbird to version 78.8.0.

    Security Fix(es):

    * 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)

    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 Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0659 advisory.

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

    This update upgrades Firefox to version 78.8.0 ESR.

    Security Fix(es):

    * 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)

    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 Oracle Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-0655 advisory.

    [78.8.0-1.0.1]
    - Removed Upstream references
    - Add firefox-oracle-default-prefs.js and remove the corresponding Red Hat file

    [78.8.0-1]
    - Update to 78.8.0 build2

    [78.7.1-1]
    - Update to 78.7.1

    [78.7.0-3]
    - Fixing install prefix for the homepage

Tenable has extracted the preceding description block directly from the Oracle 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 Oracle Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-0661 advisory.

    [78.8.0-1.0.1]
    - Replaced thunderbird-redhat-default-prefs.js with thunderbird-oracle-default-prefs.js

    [78.8.0-1]
    - Update to 78.8.0 build1

Tenable has extracted the preceding description block directly from the Oracle 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 CentOS Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0661 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 have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code or information disclosure.

For Debian 9 stretch, these problems have been fixed in version 78.8.0esr-1~deb9u1.

We recommend that you upgrade your firefox-esr packages.

For the detailed security status of firefox-esr please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/firefox-esr

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

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

    [78.8.0-1.0.1]
    - Replaced thunderbird-redhat-default-prefs.js with thunderbird-oracle-default-prefs.js

    [78.8.0-1]
    - Update to 78.8.0 build1

Tenable has extracted the preceding description block directly from the Oracle 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 NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has thunderbird packages installed that are affected by multiple vulnerabilities:

  - Use after free in WebRTC in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially     exploit heap corruption via a crafted SCTP packet. (CVE-2020-16044)

  - When a HTTPS pages was embedded in a HTTP page, and there was a service worker registered for the former,     the service worker could have intercepted the request for the secure page despite the iframe not being a     secure context due to the (insecure) framing. This vulnerability affects Firefox < 84. (CVE-2020-26976)

  - If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-     origin information, when said information is served as chunked data. This vulnerability affects Firefox <     85, Thunderbird < 78.7, and Firefox ESR < 78.7. (CVE-2021-23953)

  - Using the new logical assignment operators in a JavaScript switch statement could have caused a type     confusion, leading to a memory corruption and a potentially exploitable crash. This vulnerability affects     Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7. (CVE-2021-23954)

  - Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a     potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox     ESR < 78.7. (CVE-2021-23960)

  - Mozilla developers reported memory safety bugs present in Firefox 84 and Firefox ESR 78.6. 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 < 85, Thunderbird < 78.7, and     Firefox ESR < 78.7. (CVE-2021-23964)

  - 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 this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
146782	Mozilla Firefox ESR < 78.8	Nessus	MacOS X Local Security Checks	2/23/2021	11/18/2025	high
146815	RHEL 8 : thunderbird (RHSA-2021:0657)	Nessus	Red Hat Local Security Checks	2/24/2021	11/7/2024	high
146817	RHEL 8 : firefox (RHSA-2021:0659)	Nessus	Red Hat Local Security Checks	2/24/2021	11/7/2024	high
146866	Oracle Linux 8 : firefox (ELSA-2021-0655)	Nessus	Oracle Linux Local Security Checks	2/26/2021	10/22/2024	high
146867	Oracle Linux 7 : thunderbird (ELSA-2021-0661)	Nessus	Oracle Linux Local Security Checks	2/26/2021	10/22/2024	high
146879	CentOS 7 : thunderbird (RHSA-2021:0661)	Nessus	CentOS Local Security Checks	2/27/2021	10/9/2024	high
146919	Debian DLA-2575-1 : firefox-esr security update	Nessus	Debian Local Security Checks	3/1/2021	6/3/2021	high
146868	Oracle Linux 8 : thunderbird (ELSA-2021-0657)	Nessus	Oracle Linux Local Security Checks	2/26/2021	10/23/2024	high
154471	NewStart CGSL CORE 5.05 / MAIN 5.05 : thunderbird Multiple Vulnerabilities (NS-SA-2021-0177)	Nessus	NewStart CGSL Local Security Checks	10/27/2021	11/27/2023	high

Detections

Analytics

Plugins Search

high

high

high

high

high

high

high

high

high