CVE-2023-0465

Summary

Applications that use a non-default option when verifying certificates may be vulnerable to an attack from a malicious CA to circumvent certain checks.

Invalid certificate policies in leaf certificates are silently ignored by OpenSSL and other certificate policy checks are skipped for that certificate. A malicious CA could use this to deliberately assert invalid certificate policies in order to circumvent policy checking on the certificate altogether.

Policy processing is disabled by default but can be enabled by passing the -policy' argument to the command line utilities or by calling the X509_VERIFY_PARAM_set1_policies()' function.

Affected Software

VendorProductVersion RangeStatus
OpenSSLOpenSSL3.1.0 < 3.1.1affected
OpenSSLOpenSSL3.0.0 < 3.0.9affected
OpenSSLOpenSSL1.1.1 < 1.1.1uaffected
OpenSSLOpenSSL1.0.2 < 1.0.2zhaffected

Weaknesses

  • improper certificate validation

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References