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7.4 High

CVE-2024-0397 A defect was discovered in the Python “ssl” module where there is a memory race condition with the ssl.SSLContext…

Description

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.

Affected products and versions

Product Affected versions Fixed in
CPython 3.13 3.13.0a1 → < 3.13.0a5 3.13.0a5
CPython 3.12 3.12.0 → < 3.12.3 3.12.3
CPython 3.11 3.11.0 → < 3.11.9 3.11.9
CPython 3.10 3.10.0 → < 3.10.14 3.10.14
CPython 3.9 3.9.0 → < 3.9.20 3.9.20
CPython 3.8 earliest → < 3.8.20 3.8.20
cpython 3.13 3.13.0a1 → < 3.13.0a5 3.13.0a5
cpython 3.12 3.12.0 → < 3.12.3 3.12.3
cpython 3.11 3.11.0 → < 3.11.9 3.11.9
Show the 3 other branches
Product Affected versions Fixed in
cpython 3.10 3.10.0 → < 3.10.14 3.10.14
cpython 3.9 3.9.0 → < 3.9.20 3.9.20
cpython 3.8 earliest → < 3.8.20 3.8.20

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