Vulnerability Description
The function X509_VERIFY_PARAM_add0_policy() is documented to implicitly enable the certificate policy check when doing certificate verification. However the implementation of the function does not enable the check which allows certificates with invalid or incorrect policies to pass the certificate verification. As suddenly enabling the policy check could break existing deployments it was decided to keep the existing behavior of the X509_VERIFY_PARAM_add0_policy() function. Instead the applications that require OpenSSL to perform certificate policy check need to use X509_VERIFY_PARAM_set1_policies() or explicitly enable the policy check by calling X509_VERIFY_PARAM_set_flags() with the X509_V_FLAG_POLICY_CHECK flag argument. Certificate policy checks are disabled by default in OpenSSL and are not commonly used by applications.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openssl | Openssl | >= 1.0.2, < 1.0.2zh |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2023/09/28/4
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=0d16b7e99aafc0b4a6dMailing ListPatch
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=51e8a84ce742db0f6c7Mailing ListPatch
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=73398dea26de9899fb4Broken Link
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fc814a30fc4f0bc54fcMailing ListPatch
- https://lists.debian.org/debian-lts-announce/2023/06/msg00011.html
- https://security.gentoo.org/glsa/202402-08
- https://security.netapp.com/advisory/ntap-20230414-0001/
- https://www.debian.org/security/2023/dsa-5417
- https://www.openssl.org/news/secadv/20230328.txtVendor Advisory
- http://www.openwall.com/lists/oss-security/2023/09/28/4
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=0d16b7e99aafc0b4a6dMailing ListPatch
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=51e8a84ce742db0f6c7Mailing ListPatch
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=73398dea26de9899fb4Broken Link
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fc814a30fc4f0bc54fcMailing ListPatch
FAQ
What is CVE-2023-0466?
CVE-2023-0466 is a vulnerability with a CVSS score of 5.3 (MEDIUM). The function X509_VERIFY_PARAM_add0_policy() is documented to implicitly enable the certificate policy check when doing certificate verification. However the implementation of the function does not en...
How severe is CVE-2023-0466?
CVE-2023-0466 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-0466?
Check the references section above for vendor advisories and patch information. Affected products include: Openssl Openssl.