CVE Vulnerabilities

CVE-2023-0464

Improper Certificate Validation

Published: Mar 22, 2023 | Modified: Feb 04, 2024
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

A security vulnerability has been identified in all supported versions

of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial-of-service (DoS) attack on affected systems.

Policy processing is disabled by default but can be enabled by passing the -policy argument to the command line utilities or by calling theX509_VERIFY_PARAM_set1_policies() function.

Weakness

The product does not validate, or incorrectly validates, a certificate.

Affected Software

Name Vendor Start Version End Version
Openssl Openssl 1.0.2 *
Openssl Openssl 1.1.1 *
Openssl Openssl 3.0.0 *
Openssl Openssl 3.1.0 *

Potential Mitigations

References