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CVE-2024-0397

Date: June 17, 2024

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.

Language: C

Severity Score

Related Resources (14)

https://github.com/python/cpython/commit/01c37f1d0714f5822d34063ca7180b595abf589d
https://github.com/python/cpython/commit/b228655c227b2ca298a8ffac44d14ce3d22f6faa
https://github.com/python/cpython/commit/bce693111bff906ccf9281c22371331aaff766ab
https://github.com/python/cpython/issues/114572
http://www.openwall.com/lists/oss-security/2024/06/17/2
https://mail.python.org/archives/list/security-announce@python.org/thread/BMAK5BCGKYWNJOACVUSLUF6SFGBIM4VP/
https://github.com/python/cpython/commit/29c97287d205bf2f410f4895ebce3f43b5160524
https://github.com/python/cpython/pull/114573
https://security-tracker.debian.org/tracker/CVE-2024-0397
https://github.com/python/cpython/commit/542f3272f56f31ed04e74c40635a913fbc12d286
https://github.com/python/cpython/commit/37324b421b72b7bc9934e27aba85d48d4773002e
https://nvd.nist.gov/vuln/detail/CVE-2024-0397
https://security.netapp.com/advisory/ntap-20250411-0006/
https://www.mend.io/vulnerability-database/CVE-2024-0397

Severity Score

Weakness Type (CWE)

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-362

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): HIGH

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