CVE-2024-0397 Information

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.

Reference

https://github.com/python/cpython/issues/114572 https://github.com/python/cpython/pull/114573 https://mail.python.org/archives/list/security-announce@python.org/thread/BMAK5BCGKYWNJOACVUSLUF6SFGBIM4VP/ https://github.com/python/cpython/commit/01c37f1d0714f5822d34063ca7180b595abf589d https://github.com/python/cpython/commit/29c97287d205bf2f410f4895ebce3f43b5160524 https://github.com/python/cpython/commit/37324b421b72b7bc9934e27aba85d48d4773002e https://github.com/python/cpython/commit/542f3272f56f31ed04e74c40635a913fbc12d286 https://github.com/python/cpython/commit/b228655c227b2ca298a8ffac44d14ce3d22f6faa https://github.com/python/cpython/commit/bce693111bff906ccf9281c22371331aaff766ab http://www.openwall.com/lists/oss-security/2024/06/17/2