Description
Mozilla developers and community members Julian Hector, Randell Jesup, Gabriele Svelto, Tyson Smith, Christian Holler, and Masayuki Nakano reported memory safety bugs present in Firefox 94. 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 < 95, Firefox ESR < 91.4.0, and Thunderbird < 91.4.0.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Mozilla / Firefoxunspecified – 95
- Mozilla / Firefox ESRunspecified – 91.4.0
- Mozilla / Thunderbirdunspecified – 91.4.0
References
- VENDOR_ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2021-53/
- VENDOR_ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2021-54/
- VENDOR_ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2021-52/
- MISChttps://bugzilla.mozilla.org/buglist.cgi?bug_id=1393362%2C1736046%2C1736751%2C1737009%2C1739372%2C1739421