PoC Index85,100 CVEs with PoCs

CVE-2023-0464

Excessive Resource Usage Verifying X.509 Policy Constraints

HIGH 7.5EPSS 4.0%

A security vulnerability has been identified in all supported versionsof OpenSSL related to the verification of X.509 certificate chainsthat include policy constraints. Attackers may be able to exploit thisvulnerability by creating a malicious certificate chain that triggersexponential 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 passingthe `-policy' argument to the command line utilities or by calling the`X509_VERIFY_PARAM_set1_policies()' function.

Affected
OpenSSL
CVSS v3.1 NVD
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
3.98% chance of exploitation in the next 30 days, 90th percentile
Published
2023-03-22
Updated
2026-10-14

Proof-of-concept exploits (1)

Security advisories

References