Vulnerability in Python Software Foundation Cpython
CVE-2024-0397
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.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Python Software Foundation Cpython — versions 0, 3.9.0, 3.10.0
Weakness classification (CWE)
References
- github.com/python/cpython/issues/114572 (issue-tracking)
- github.com/python/cpython/pull/114573 (patch)
- mail.python.org/archives/list/security-announce@python.org/thread/BMAK5BCGKYWNJ… (vendor-advisory)
- github.com/python/cpython/commit/01c37f1d0714f5822d34063ca7180b595abf589d (patch)
- github.com/python/cpython/commit/29c97287d205bf2f410f4895ebce3f43b5160524 (patch)
- github.com/python/cpython/commit/37324b421b72b7bc9934e27aba85d48d4773002e (patch)
- github.com/python/cpython/commit/542f3272f56f31ed04e74c40635a913fbc12d286 (patch)
- github.com/python/cpython/commit/b228655c227b2ca298a8ffac44d14ce3d22f6faa (patch)
- github.com/python/cpython/commit/bce693111bff906ccf9281c22371331aaff766ab (patch)
- www.openwall.com/lists/oss-security/2024/06/17/2
Frequently asked questions
- What is CVE-2024-0397?
- CVE-2024-0397 is a high-severity vulnerability in Python Software Foundation Cpython, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.4/10. Published 2024-06-17.
- How severe is CVE-2024-0397?
- High severity. CVSS v3 base score is 7.4 out of 10.