Fwd: [Security-announce][CVE-2024-0397] Memory race condition in ssl.SSLContext certificate store methods

[Alan Coopersmith <alan.coopersmith () oracle com>]

-------- 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 () python org>
Reply-To:       security-sig () python org
To:     security-announce () python 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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