CTranslate2 before 4.8.1 contains an out-of-bounds heap read vulnerability in the binary model loader when deserializing string fields without null terminators. Attackers can craft malicious model files to trigger heap memory reads past buffer boundaries, causing crashes or disclosing adjacent heap memory contents.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 6
https://github.com/OpenNMT/CTranslate2
disclosure@vulncheck.com
https://github.com/OpenNMT/CTranslate2/blob/v4.8.0/src/models/model.cc#L81-L87
disclosure@vulncheck.com
https://github.com/OpenNMT/CTranslate2/commit/d9b991e0700933a0c05373df8b52ed89c…
disclosure@vulncheck.com
https://github.com/OpenNMT/CTranslate2/pull/2068
disclosure@vulncheck.com
https://github.com/OpenNMT/CTranslate2/releases/tag/v4.8.1
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/ctranslate2-before-4.8.1-out-of-bounds-rea…
disclosure@vulncheck.com