Description
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
E
High
RL
T
RC
Changed
Affected products
- libexpat project / libexpat0 – 2.7.2
References
- MISChttps://github.com/libexpat/libexpat/issues/1018
- PATCHhttps://github.com/libexpat/libexpat/pull/1034
- MISChttps://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74
- MISChttps://issues.oss-fuzz.com/issues/439133977
- MISChttps://github.com/libexpat/libexpat/blob/R_2_7_2/expat/Changes