See https://www.openssl.org/news/secadv/20230322.txt. """ Excessive Resource Usage Verifying X.509 Policy Constraints (CVE-2023-0464) =========================================================================== Severity: Low 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. OpenSSL 3.1, 3.0, 1.1.1 and 1.0.2 are vulnerable to this issue. Due to the low severity of this issue we are not issuing new releases of OpenSSL at this time. The fix will be included in the next releases when they become available. The fix is also available in commit 2017771e (for 3.1), commit 959c59c7 (for 3.0), commit 879f7080 (for 1.1.1) in the OpenSSL git repository, and commit 2dcd4f1e (for 1.0.2) in the OpenSSL git repository for premium customers. Once they are released: OpenSSL 3.1 users should upgrade to 3.1.1. OpenSSL 3.0 users should upgrade to 3.0.9. OpenSSL 1.1.1 users should upgrade to 1.1.1u. OpenSSL 1.0.2 users should upgrade to 1.0.2zh (premium support customers only). This issue was reported on 12th January 2023 by David Benjamin (Google). The fix was developed by Dr Paul Dale. OpenSSL 1.1.1 will reach end-of-life on 2023-09-11. After that date security fixes for 1.1.1 will only be available to premium support customers. """
In Gentoo, fixed in: 1.1.1t-r2, 3.0.8-r2, 3.1.0-r1.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/data/glsa.git/commit/?id=f353a9a7c6ffd4dd54f9b93774d103942a88892e commit f353a9a7c6ffd4dd54f9b93774d103942a88892e Author: GLSAMaker <glsamaker@gentoo.org> AuthorDate: 2024-02-04 08:02:53 +0000 Commit: Hans de Graaff <graaff@gentoo.org> CommitDate: 2024-02-04 08:03:15 +0000 [ GLSA 202402-08 ] OpenSSL: Multiple Vulnerabilities Bug: https://bugs.gentoo.org/876787 Bug: https://bugs.gentoo.org/893446 Bug: https://bugs.gentoo.org/902779 Bug: https://bugs.gentoo.org/903545 Bug: https://bugs.gentoo.org/907413 Bug: https://bugs.gentoo.org/910556 Bug: https://bugs.gentoo.org/911560 Signed-off-by: GLSAMaker <glsamaker@gentoo.org> Signed-off-by: Hans de Graaff <graaff@gentoo.org> glsa-202402-08.xml | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+)
