Vulnerabilities > CVE-2021-29981 - Unspecified vulnerability in Mozilla Firefox
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
An issue present in lowering/register allocation could have led to obscure but deterministic register confusion failures in JITted code that would lead to a potentially exploitable crash. This vulnerability affects Firefox < 91 and Thunderbird < 91.
Vulnerable Configurations
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1707774
- https://bugzilla.mozilla.org/show_bug.cgi?id=1707774
- https://security.gentoo.org/glsa/202202-03
- https://security.gentoo.org/glsa/202202-03
- https://www.mozilla.org/security/advisories/mfsa2021-33/
- https://www.mozilla.org/security/advisories/mfsa2021-33/
- https://www.mozilla.org/security/advisories/mfsa2021-36/
- https://www.mozilla.org/security/advisories/mfsa2021-36/