CVE-2023-0464

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 the `X509_VERIFY_PARAM_set1_policies()' function.

Affected products

Alt Linux, Almalinux, Astra Linux, Ibm Aix, Linuxmint, Openssl, Red Hat, Red Os

Openssl

< 1.0.2zh, 1.1.1u, 3.0.9, 3.1.1

CVSS 3.1

7.5 HIGH

EPSS

3.7% (89th percentile)

Weakness

CWE-295

NVD status

Modified

Published

2023-03-22