IM
IronMonkey Threat Research

CVE-2023-0466 MEDIUM

Published: 2023-03-28 | Last Modified: 2025-02-19 | Status: Modified

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 Metrics

Base Score: 5.3 (MEDIUM)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactNONE
Integrity ImpactLOW
Availability ImpactNONE

Source: [email protected]

Type: Primary

Exploitability Score: 3.9

Impact Score: 1.4

Weaknesses

Source Type Description
[email protected] Primary
en CWE-295

Affected Products

Vendor Product Version Update Type
openssl openssl * <built-in method update of dict object at 0x7fd2d399a7c0> Application
openssl openssl * <built-in method update of dict object at 0x7fd2d3999980> Application
openssl openssl * <built-in method update of dict object at 0x7fd34b8daf40> Application
openssl openssl * <built-in method update of dict object at 0x7fd341efa440> Application

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*

References