CVE-2024-0397
Memory race condition in ssl.SSLContext certificate store methods
CVE-2024-0397 is fixed in 61 products on 2 platforms, first by Python 3.11 3.11.9, released April 2, 2024. 7 other affected products have no fix yet. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
7.4
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0081
57th percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Python 3.11 | 3.11.9 | Python 3.11 3.11.9 | Apr 2, 2024 |
| Python 3.12 | 3.12.3 | Python 3.12 3.12.3 | Apr 9, 2024 |
| Linux | |||
| idle-python3.10 · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.5 | idle-python3.10 3.10.12-1~22.04.5 | Jun 17, 2024 |
| idle-python3.8 · Ubuntu 20.04 LTS (focal) | 3.8.10-0ubuntu1~20.04.11 | idle-python3.8 3.8.10-0ubuntu1~20.04.11 | Jun 17, 2024 |
| libpython3.10 · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.5 | libpython3.10 3.10.12-1~22.04.5 | Jun 17, 2024 |
| libpython3.10-minimal · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.5 | libpython3.10-minimal 3.10.12-1~22.04.5 | Jun 17, 2024 |
| libpython3.10-stdlib · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.5 | libpython3.10-stdlib 3.10.12-1~22.04.5 | Jun 17, 2024 |
| libpython3.10-testsuite · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.5 | libpython3.10-testsuite 3.10.12-1~22.04.5 | Jun 17, 2024 |
| libpython3.8 · Ubuntu 20.04 LTS (focal) | 3.8.10-0ubuntu1~20.04.11 | libpython3.8 3.8.10-0ubuntu1~20.04.11 | Jun 17, 2024 |
| libpython3.8-minimal · Ubuntu 20.04 LTS (focal) | 3.8.10-0ubuntu1~20.04.11 | libpython3.8-minimal 3.8.10-0ubuntu1~20.04.11 | Jun 17, 2024 |
| libpython3.8-stdlib · Ubuntu 20.04 LTS (focal) | 3.8.10-0ubuntu1~20.04.11 | libpython3.8-stdlib 3.8.10-0ubuntu1~20.04.11 | Jun 17, 2024 |
| libpython3.8-testsuite · Ubuntu 20.04 LTS (focal) | 3.8.10-0ubuntu1~20.04.11 | libpython3.8-testsuite 3.8.10-0ubuntu1~20.04.11 | Jun 17, 2024 |
| pypy3 · Debian 13.5 (trixie) | 7.3.16+dfsg-1 | DEBIAN-CVE-2024-0397 | Jun 17, 2024 |
| pypy3 · Debian 14 | 7.3.16+dfsg-1 | DEBIAN-CVE-2024-0397 | Jun 17, 2024 |
| python-unversioned-command · RHEL 9 | 0:3.9.21-1.el9_5 | RHSA-2024:10983 | Dec 12, 2024 |
| python-unversioned-command · amzn 2023 | 3.9.16-1.amzn2023.0.9 | ALAS2023-2024-699 | Aug 1, 2024 |
| python3 · RHEL 9 | 0:3.9.21-1.el9_5 | RHSA-2024:10983 | Dec 12, 2024 |
| python3 · amzn 2023 | 3.9.16-1.amzn2023.0.9 | ALAS2023-2024-699 | Aug 1, 2024 |
| python3 · opensuse-leap 15.6 | 3.6.15-150300.10.65.2 | SUSE-SU-2024:2479-1 | Jul 15, 2024 |
| python3 · sles 15.6 | 3.6.15-150300.10.65.2 | SUSE-SU-2024:2479-1 | Jul 15, 2024 |
| python3-core · opensuse-leap 15.6 | 3.6.15-150300.10.65.1 | SUSE-SU-2024:2479-1 | Jul 15, 2024 |
| python3-core · sles 15.6 | 3.6.15-150300.10.65.1 | SUSE-SU-2024:2479-1 | Jul 15, 2024 |
| python3-debug · RHEL 9 | 0:3.9.21-1.el9_5 | RHSA-2024:10983 | Dec 12, 2024 |
| python3-debug · amzn 2023 | 3.9.16-1.amzn2023.0.9 | ALAS2023-2024-699 | Aug 1, 2024 |
| python3-devel · RHEL 9 | 0:3.9.21-1.el9_5 | RHSA-2024:10983 | Dec 12, 2024 |
| python3-devel · amzn 2023 | 3.9.16-1.amzn2023.0.9 | ALAS2023-2024-699 | Aug 1, 2024 |
| python3-documentation · opensuse-leap 15.6 | 3.6.15-150300.10.65.1 | SUSE-SU-2024:2479-1 | Jul 15, 2024 |
| python3-idle · RHEL 9 | 0:3.9.21-1.el9_5 | RHSA-2024:10983 | Dec 12, 2024 |
| python3-idle · amzn 2023 | 3.9.16-1.amzn2023.0.9 | ALAS2023-2024-699 | Aug 1, 2024 |
| python3-libs · RHEL 9 | 0:3.9.21-1.el9_5 | RHSA-2024:10983 | Dec 12, 2024 |
| python3-libs · amzn 2023 | 3.9.16-1.amzn2023.0.9 | ALAS2023-2024-699 | Aug 1, 2024 |
| python3-test · RHEL 9 | 0:3.9.21-1.el9_5 | RHSA-2024:10983 | Dec 12, 2024 |
| python3-test · amzn 2023 | 3.9.16-1.amzn2023.0.9 | ALAS2023-2024-699 | Aug 1, 2024 |
| python3-tkinter · RHEL 9 | 0:3.9.21-1.el9_5 | RHSA-2024:10983 | Dec 12, 2024 |
| python3-tkinter · amzn 2023 | 3.9.16-1.amzn2023.0.9 | ALAS2023-2024-699 | Aug 1, 2024 |
| python3.10 · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.5 | python3.10 3.10.12-1~22.04.5 | Jun 17, 2024 |
| python3.10-examples · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.5 | python3.10-examples 3.10.12-1~22.04.5 | Jun 17, 2024 |
| python3.10-full · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.5 | python3.10-full 3.10.12-1~22.04.5 | Jun 17, 2024 |
| python3.10-minimal · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.5 | python3.10-minimal 3.10.12-1~22.04.5 | Jun 17, 2024 |
| python3.10-nopie · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.5 | python3.10-nopie 3.10.12-1~22.04.5 | Jun 17, 2024 |
| python3.10-venv · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.5 | python3.10-venv 3.10.12-1~22.04.5 | Jun 17, 2024 |
| python3.11 · Debian 12.15 (bookworm) | 3.11.2-6+deb12u3 | DSA-5759-1 | Aug 27, 2024 |
| python3.11 · RHEL 9 | 0:3.11.9-7.el9 | RHSA-2024:9192 | Nov 12, 2024 |
| python3.11 · amzn 2023 | 3.11.6-1.amzn2023.0.5 | ALAS2023-2024-788 | Dec 5, 2024 |
| python3.11-debug · RHEL 9 | 0:3.11.9-7.el9 | RHSA-2024:9192 | Nov 12, 2024 |
| python3.11-debug · amzn 2023 | 3.11.6-1.amzn2023.0.5 | ALAS2023-2024-788 | Dec 5, 2024 |
| python3.11-debuginfo · amzn 2023 | 3.11.6-1.amzn2023.0.5 | ALAS2023-2024-788 | Dec 5, 2024 |
| python3.11-debugsource · amzn 2023 | 3.11.6-1.amzn2023.0.5 | ALAS2023-2024-788 | Dec 5, 2024 |
| python3.11-devel · RHEL 9 | 0:3.11.9-7.el9 | RHSA-2024:9192 | Nov 12, 2024 |
| python3.11-devel · amzn 2023 | 3.11.6-1.amzn2023.0.5 | ALAS2023-2024-788 | Dec 5, 2024 |
| python3.11-idle · RHEL 9 | 0:3.11.9-7.el9 | RHSA-2024:9192 | Nov 12, 2024 |
| python3.11-idle · amzn 2023 | 3.11.6-1.amzn2023.0.5 | ALAS2023-2024-788 | Dec 5, 2024 |
| python3.11-libs · RHEL 9 | 0:3.11.9-7.el9 | RHSA-2024:9192 | Nov 12, 2024 |
| python3.11-libs · amzn 2023 | 3.11.6-1.amzn2023.0.5 | ALAS2023-2024-788 | Dec 5, 2024 |
| python3.11-test · RHEL 9 | 0:3.11.9-7.el9 | RHSA-2024:9192 | Nov 12, 2024 |
| python3.11-test · amzn 2023 | 3.11.6-1.amzn2023.0.5 | ALAS2023-2024-788 | Dec 5, 2024 |
| python3.11-tkinter · RHEL 9 | 0:3.11.9-7.el9 | RHSA-2024:9192 | Nov 12, 2024 |
| python3.11-tkinter · amzn 2023 | 3.11.6-1.amzn2023.0.5 | ALAS2023-2024-788 | Dec 5, 2024 |
| python3.12 · RHEL 9 | 0:3.12.5-2.el9 | RHSA-2024:9190 | Nov 12, 2024 |
| python3.12-debug · RHEL 9 | 0:3.12.5-2.el9 | RHSA-2024:9190 | Nov 12, 2024 |
| python3.12-devel · RHEL 9 | 0:3.12.5-2.el9 | RHSA-2024:9190 | Nov 12, 2024 |
| python3.12-idle · RHEL 9 | 0:3.12.5-2.el9 | RHSA-2024:9190 | Nov 12, 2024 |
| python3.12-libs · RHEL 9 | 0:3.12.5-2.el9 | RHSA-2024:9190 | Nov 12, 2024 |
| python3.12-test · RHEL 9 | 0:3.12.5-2.el9 | RHSA-2024:9190 | Nov 12, 2024 |
| python3.12-tkinter · RHEL 9 | 0:3.12.5-2.el9 | RHSA-2024:9190 | Nov 12, 2024 |
| python3.8 · Ubuntu 20.04 LTS (focal) | 3.8.10-0ubuntu1~20.04.11 | python3.8 3.8.10-0ubuntu1~20.04.11 | Jun 17, 2024 |
| python3.8-examples · Ubuntu 20.04 LTS (focal) | 3.8.10-0ubuntu1~20.04.11 | python3.8-examples 3.8.10-0ubuntu1~20.04.11 | Jun 17, 2024 |
| python3.8-full · Ubuntu 20.04 LTS (focal) | 3.8.10-0ubuntu1~20.04.11 | python3.8-full 3.8.10-0ubuntu1~20.04.11 | Jun 17, 2024 |
| python3.8-minimal · Ubuntu 20.04 LTS (focal) | 3.8.10-0ubuntu1~20.04.11 | python3.8-minimal 3.8.10-0ubuntu1~20.04.11 | Jun 17, 2024 |
| python3.8-venv · Ubuntu 20.04 LTS (focal) | 3.8.10-0ubuntu1~20.04.11 | python3.8-venv 3.8.10-0ubuntu1~20.04.11 | Jun 17, 2024 |
| python3.9-debuginfo · amzn 2023 | 3.9.16-1.amzn2023.0.9 | ALAS2023-2024-699 | Aug 1, 2024 |
| python3.9-debugsource · amzn 2023 | 3.9.16-1.amzn2023.0.9 | ALAS2023-2024-699 | Aug 1, 2024 |
| python311 · opensuse-leap 15.6 | 3.11.9-150600.3.3.1 | SUSE-SU-2025:02089-1 | Jun 24, 2025 |
| python311 · sles 15.6 | 3.11.9-150600.3.3.1 | SUSE-SU-2025:02089-1 | Jun 24, 2025 |
| python311-core · opensuse-leap 15.6 | 3.11.9-150600.3.3.1 | SUSE-SU-2025:02089-1 | Jun 24, 2025 |
| python311-core · sles 15.6 | 3.11.9-150600.3.3.1 | SUSE-SU-2025:02089-1 | Jun 24, 2025 |
| python311-documentation · opensuse-leap 15.6 | 3.11.9-150600.3.3.1 | SUSE-SU-2025:02089-1 | Jun 24, 2025 |
| python312 · opensuse-leap 15.6 | 3.12.4-150600.3.3.1 | SUSE-SU-2024:2572-1 | Jul 22, 2024 |
| python312 · sles 15.6 | 3.12.4-150600.3.3.1 | SUSE-SU-2024:2572-1 | Jul 22, 2024 |
| python312-core · opensuse-leap 15.6 | 3.12.4-150600.3.3.1 | SUSE-SU-2024:2572-1 | Jul 22, 2024 |
| python312-core · sles 15.6 | 3.12.4-150600.3.3.1 | SUSE-SU-2024:2572-1 | Jul 22, 2024 |
| python312-documentation · opensuse-leap 15.6 | 3.12.4-150600.3.3.1 | SUSE-SU-2024:2572-1 | Jul 22, 2024 |
| python39 · opensuse-leap 15.6 | 3.9.19-150300.4.46.1 | SUSE-SU-2024:2280-1 | Jul 2, 2024 |
| python39-core · opensuse-leap 15.6 | 3.9.19-150300.4.46.1 | SUSE-SU-2024:2280-1 | Jul 2, 2024 |
| python39-documentation · opensuse-leap 15.6 | 3.9.19-150300.4.46.1 | SUSE-SU-2024:2280-1 | Jul 2, 2024 |
| No fix yet | |||
| Python 2 (Windows apps) | No fix yet | no-fix | n/a |
| Python 3.10 (Windows apps) | No fix yet | no-fix | n/a |
| Python 3.5 (Windows apps) | No fix yet | no-fix | n/a |
| Python 3.6 (Windows apps) | No fix yet | no-fix | n/a |
| Python 3.7 (Windows apps) | No fix yet | no-fix | n/a |
| Python 3.8 (Windows apps) | No fix yet | no-fix | n/a |
| Python 3.9 (Windows apps) | No fix yet | no-fix | n/a |
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