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Date: Mon, 17 Jun 2024 09:31:05 -0700
From: Alan Coopersmith <alan.coopersmith@...cle.com>
To: oss-security@...ts.openwall.com
Subject: Fwd: [Security-announce][CVE-2024-0397] Memory race condition in
 ssl.SSLContext certificate store methods




-------- Forwarded Message --------
Subject: 	[Security-announce][CVE-2024-0397] Memory race condition in 
ssl.SSLContext certificate store methods
Date: 	Mon, 17 Jun 2024 09:02:21 -0500
From: 	Seth Larson <seth@...hon.org>
Reply-To: 	security-sig@...hon.org
To: 	security-announce@...hon.org



A defect was discovered in the Python “ssl” module where there is a memory race 
condition with the ssl.SSLContext methods “cert_store_stats()” and 
“get_ca_certs()”. The race condition can be triggered if the methods are called 
at the same time as certificates are loaded into the SSLContext, such as during 
the TLS handshake with a certificate directory configured. This issue is fixed 
in CPython 3.10.14, 3.11.9, 3.12.3, and 3.13.0a5.

Severity: Low

References

   * https://github.com/python/cpython/issues/114572
   * https://github.com/python/cpython/pull/114573



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