CVE-2023-39969

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Summary

CVECVE-2023-39969
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-08-09 16:15:00 UTC
Updated2023-08-16 17:12:00 UTC
Descriptionuthenticode is a small cross-platform library for partially verifying Authenticode digital signatures. Version 1.0.9 of uthenticode hashed the entire file rather than hashing sections by virtual address, in violation of the Authenticode specification. As a result, an attacker could modify code within a binary without changing its Authenticode hash, making it appear valid from uthenticode's perspective. Versions of uthenticode prior to 1.0.9 are not vulnerable to this attack, nor are versions in the 2.x series. By design, uthenticode does not perform full-chain validation. However, the malleability of signature verification introduced in 1.0.9 was an unintended oversight. The 2.x series addresses the vulnerability. Versions prior to 1.0.9 are also not vulnerable, but users are encouraged to upgrade rather than downgrade. There are no workarounds to this vulnerability.

Risk And Classification

Problem Types: CWE-347

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Trailofbits Uthenticode All All All All

References

ReferenceSourceLinkTags
Signature validation bypass · Advisory · trailofbits/uthenticode · GitHub MISC github.com
Fix hashing (#84) · trailofbits/uthenticode@8670b7b · GitHub MISC github.com
Fix hashing by woodruffw · Pull Request #84 · trailofbits/uthenticode · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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