Vulnerabilities > CVE-2021-23960 - Unspecified vulnerability in Mozilla Firefox
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
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.
Vulnerable Configurations
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1675755
- https://bugzilla.mozilla.org/show_bug.cgi?id=1675755
- https://www.mozilla.org/security/advisories/mfsa2021-03/
- https://www.mozilla.org/security/advisories/mfsa2021-03/
- https://www.mozilla.org/security/advisories/mfsa2021-04/
- https://www.mozilla.org/security/advisories/mfsa2021-04/
- https://www.mozilla.org/security/advisories/mfsa2021-05/
- https://www.mozilla.org/security/advisories/mfsa2021-05/