Amazon Linux AMI: CVE-2023-0466: Security patch for openssl (ALAS-2023-1762)

Amazon Linux AMI: CVE-2023-0466: Security patch for openssl (ALAS-2023-1762)

Severity

5

CVSS

(AV:N/AC:L/Au:N/C:N/I:P/A:N)

Published

03/28/2023

Created

06/12/2023

Added

06/09/2023

Modified

01/28/2025

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.

Solution(s)

• amazon-linux-upgrade-openssl

References

• ALAS-2023-1762
• CVE-2023-0466