CTranslate2 before 4.8.1 contains a heap-based buffer overflow in the binary model loader that fails to validate payload length against allocated buffer size. Attackers can craft malicious model files with oversized payload lengths to write past heap allocation boundaries, causing crashes or arbitrary code execution.
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
High
Complete data leak
Integrity
High
Complete 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#L656-L657
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-heap-buffer-overf…
disclosure@vulncheck.com