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Advisories

openssl_encrypt before 1.4.9 GPG Signature Verification Bypass

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severity
critical
date
Affecting

  • openssl_encrypt >= 0, < 1.4.9

CWE
  • CWE-347 Improper Verification of Cryptographic Signature
CVSS
9.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Description
openssl_encrypt versions before 1.4.9 contain a signature verification vulnerability in gpg_runner.verify_detached that accepts revoked and expired keys by only checking VALIDSIG status without inspecting REVKEYSIG, EXPKEYSIG, or gpg exit codes. Attackers holding compromised-then-revoked signing keys or expired project keys can bypass signature verification to execute malicious plugins in the host process.

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