Bug 2361067 (CVE-2025-43903)

Summary: CVE-2025-43903 poppler: SignatureValue not checked within SignerInfo
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Poppler. For signatures with non-empty encapsulated content, typically adbe.pkcs7.sha1, it would only compare hash values, and SignatureValue was never checked within SignerInfo. This issue could lead to signature forgeries.
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Description OSIDB Bzimport 2025-04-18 22:01:10 UTC
NSSCryptoSignBackend.cc in Poppler before 25.04.0 does not verify the adbe.pkcs7.sha1 signatures on documents, resulting in potential signature forgeries.