Description
Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 68.4.1, Thunderbird < 68.4.1, and Firefox < 72.0.1.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Mozilla / Firefoxunspecified – 72.0.1
- Mozilla / Firefox ESRunspecified – 68.4.1
- Mozilla / Thunderbirdunspecified – 68.4.1
References
- VENDOR_ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2020-04/
- VENDOR_ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2020-03/
- MISChttps://bugzilla.mozilla.org/show_bug.cgi?id=1607443
- MISChttps://security.gentoo.org/glsa/202003-02
- VENDOR_ADVISORYhttps://usn.ubuntu.com/4335-1/
- EXPLOIThttp://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html