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Improper Certificate Validation The advisory has been revoked - it doesn't affect any version of package openssl  (opens in a new tab)

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EPSS
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  • Snyk IDSNYK-UBUNTU2510-OPENSSL-14124210
  • published27 Nov 2025
  • disclosed22 Mar 2023
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Introduced: 22 Mar 2023

CVE-2023-0464  (opens in a new tab)
CWE-295  (opens in a new tab)

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:25.10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by 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 the X509_VERIFY_PARAM_set1_policies()' function.

References