Improper Certificate Validation Affecting edk2-tools-doc package, versions <0:20200801stable-1.amzn2.0.5


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.17% (56th percentile)

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  • Snyk IDSNYK-AMZN2-EDK2TOOLSDOC-6457708
  • published19 Mar 2024
  • disclosed28 Mar 2023

Introduced: 28 Mar 2023

CVE-2023-0466  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 edk2-tools-doc to version 0:20200801stable-1.amzn2.0.5 or higher.
This issue was patched in ALAS2-2024-2502.

NVD Description

Note: Versions mentioned in the description apply only to the upstream edk2-tools-doc package and not the edk2-tools-doc package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

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 Scores

version 3.1