Published: 26/02/2021 Updated: 27/05/2022

CVSS v2 Base Score: 6.8 | Impact Score: 6.4 | Exploitability Score: 8.6

CVSS v3 Base Score: 8.8 | Impact Score: 5.9 | Exploitability Score: 2.8

VMScore: 605

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

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.

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mozilla firefox
mozilla firefox esr
mozilla thunderbird
debian debian linux 9.0
debian debian linux 10.0

Multiple security issues were discovered in Thunderbird, which could result in the execution of arbitrary code or information disclosure For the stable distribution (buster), these problems have been fixed in version 1:7880-1~deb10u1 We recommend that you upgrade your thunderbird packages For the detailed security status of thunderbird please ...

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 the stable distribution (buster), these problems have been fixed in version 7880esr-1~deb10u1 We recommend that you upgrade your firefox-esr packages For the detailed secur ...

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 < 788, and Firefox ESR < 788 ...

A security issue was found in Firefox before version 860 and Thunderbird before version 788 Mozilla developers reported memory safety bugs present in Firefox 85, Firefox ESR 787 and Thunderbird 787 Some of these bugs showed evidence of memory corruption and Mozilla presumes that with enough effort some of these could have been exploited to ru ...

Mozilla Foundation Security Advisory 2021-07 Security Vulnerabilities fixed in Firefox 86 Announced February 23, 2021 Impact high Products Firefox Fixed in Firefox 86 ...

Mozilla Foundation Security Advisory 2021-09 Security Vulnerabilities fixed in Thunderbird 788 Announced February 23, 2021 Impact high Products Thunderbird Fixed in Thunderbird 788 ...

Mozilla Foundation Security Advisory 2021-08 Security Vulnerabilities fixed in Firefox ESR 788 Announced February 23, 2021 Impact high Products Firefox ESR Fixed in Firefox ESR 788 ...

https://bugzilla.mozilla.org/buglist.cgi?bug_id=786797%2C1682928%2C1687391%2C1687597 https://www.mozilla.org/security/advisories/mfsa2021-08/https://www.mozilla.org/security/advisories/mfsa2021-09/https://www.mozilla.org/security/advisories/mfsa2021-07/https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html https://www.debian.org/security/2021/dsa-4866 https://security.gentoo.org/glsa/202104-09 https://security.gentoo.org/glsa/202104-10 https://nvd.nist.gov https://www.debian.org/security/2021/dsa-4866

CVE-2021-23978

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