CVE-2024-0397

NameCVE-2024-0397
DescriptionA 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
python2.7 (PTS)bullseye2.7.18-8+deb11u1vulnerable
python3.11 (PTS)bookworm3.11.2-6+deb12u2vulnerable
sid, trixie3.11.9-1fixed
python3.12 (PTS)sid, trixie3.12.4-1fixed
python3.13 (PTS)trixie3.13.0~b2-1fixed
sid3.13.0~b3-3fixed
python3.9 (PTS)bullseye3.9.2-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
python2.7source(unstable)(unfixed)
python3.11source(unstable)3.11.9-1
python3.12source(unstable)3.12.3-1
python3.13source(unstable)(not affected)
python3.7source(unstable)(unfixed)
python3.9source(unstable)(unfixed)

Notes

- python3.13 <not-affected> (Fixed before initial upload to Debian unstable)
[bookworm] - python3.11 <no-dsa> (Minor issue)
[bullseye] - python3.9 <no-dsa> (Minor issue)
[bullseye] - python2.7 <ignored> (Unsupported in Bullseye, only included to build a few applications)
https://github.com/advisories/GHSA-xhf3-pp4q-gxh5
https://github.com/python/cpython/issues/114572
https://github.com/python/cpython/pull/114573
https://github.com/python/cpython/commit/542f3272f56f31ed04e74c40635a913fbc12d286 (v3.12.3)
https://github.com/python/cpython/commit/01c37f1d0714f5822d34063ca7180b595abf589d (v3.11.9)
https://github.com/python/cpython/commit/b228655c227b2ca298a8ffac44d14ce3d22f6faa (3.9-branch)

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