CVE-2024-0397

Aliases:UBUNTU-CVE-2024-0397DEBIAN-CVE-2024-0397CGA-cxvp-8wxx-f32mCGA-h76w-h578-gg85
Advisory lineage Upstream: 0 Downstream: 28
Deferred
Published: 17 Jun 2024, 15:09
Last modified:03 Nov 2025, 21:50

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.4 HIGH
v3.1 (cve.org)
EPSS Score
0.81% LOW
1% probability +0.43%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

17 Jun 2024, 15:09
Published
Vulnerability first disclosed
03 Nov 2025, 21:50
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS Trends

Current EPSS score: 0.81%• Percentile: 55%

Techniques & Countermeasures

  • CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

    The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Affected Systems

  • chainguard•python-3.9

    < 3.9.19-r2

  • debian•pypy3

    all | all | < 7.3.16+dfsg-1 | < 7.3.16+dfsg-1

  • debian•python2.7

    all

  • debian•python3.11

    < 3.11.2-6+deb12u3

  • debian•python3.9

    < 3.9.2-1+deb11u2

  • ubuntu•python2.7

    all

  • ubuntu•python3.10

    < 3.10.12-1~22.04.5

  • ubuntu•python3.11

    all | all

  • ubuntu•python3.4

    all

  • ubuntu•python3.6

    all

  • ubuntu•python3.7

    all

  • ubuntu•python3.8

    all | < 3.8.10-0ubuntu1~20.04.11

  • ubuntu•python3.9

    all

  • python software foundation•cpython

    < 3.8.20 | ≥ 3.9.0, < 3.9.20 | ≥ 3.10.0, < 3.10.14 | ≥ 3.11.0, < 3.11.9 | ≥ 3.12.0, < 3.12.3 | ≥ 3.13.0a1, < 3.13.0a5

References (19)