CVE-2023-40012

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Summary

CVECVE-2023-40012
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-08-09 16:15:00 UTC
Updated2023-08-16 17:40:00 UTC
Descriptionuthenticode is a small cross-platform library for partially verifying Authenticode digital signatures. Versions of uthenticode prior to the 2.x series did not check Extended Key Usages in certificates, in violation of the Authenticode X.509 certificate profile. As a result, a malicious user could produce a "signed" PE file that uthenticode would verify and consider valid using an X.509 certificate that isn't entitled to produce code signatures (e.g., a SSL certificate). By design, uthenticode does not perform full-chain validation. However, the absence of EKU validation was an unintended oversight. The 2.0.0 release series includes EKU checks. 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
EKU validation bypass in uthenticode · Advisory · trailofbits/uthenticode · GitHub MISC github.com
src: bump OpenSSL, EKU check by woodruffw · Pull Request #78 · trailofbits/uthenticode · GitHub MISC github.com
src: bump OpenSSL, EKU check (#78) · trailofbits/uthenticode@caeb1eb · 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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