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CVE-2024-5642 Details

UNDERGOING ENRICHMENT

The CVE is currently being enriched by the Volerion team. The enrichment process results in the association of reference link tags, CVSS, and CPE applicability statement data.

Description

CPython 3.9 and earlier doesn't disallow configuring an empty list ("[]") for SSLContext.set_npn_protocols() which is an invalid value for the underlying OpenSSL API. This results in a buffer over-read when NPN is used (see CVE-2024-5535 for OpenSSL). This vulnerability is of low severity due to NPN being not widely used and specifying an empty list likely being uncommon in-practice (typically a protocol name would be configured).

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:…Vector:This vulnerability is currently being analyzed.

CNA: CISA-ADPCVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://github.com/python/cpython/commit/39258d3595300bc7b952854c915f63ae2d4b9c3e	CVE
https://github.com/python/cpython/issues/121227	CVE
https://github.com/python/cpython/pull/23014	CVE
https://jbp.io/2024/06/27/cve-2024-5535-openssl-memory-safety.html	CVE
https://mail.python.org/archives/list/[email protected]/thread/PLP2JI3PJY33YG6P5BZYSSNU66HASXBQ/	CVE
https://security.netapp.com/advisory/ntap-20240726-0005/	CVE
http://www.openwall.com/lists/oss-security/2024/06/28/4	CVE
https://github.com/python/cpython/commit/39258d3595300bc7b952854c915f63ae2d4b9c3e	[email protected]
https://github.com/python/cpython/commit/a2cdbb6e8188ba9ba8b356b28d91bff60e86fe31	[email protected]
https://github.com/python/cpython/issues/121227	[email protected]
https://github.com/python/cpython/pull/23014	[email protected]
https://jbp.io/2024/06/27/cve-2024-5535-openssl-memory-safety.html	[email protected]
https://mail.python.org/archives/list/[email protected]/thread/PLP2JI3PJY33YG6P5BZYSSNU66HASXBQ/	[email protected]
https://security.netapp.com/advisory/ntap-20240726-0005/	[email protected]
http://www.openwall.com/lists/oss-security/2024/06/28/4	[email protected]

see all 15 references

Weakness Enumeration

No weakness enumeration is available for this CVE.

Affected Products

This vulnerability is currently being analyzed

Change History

12 change records found show changes

Date	Action	Recorded By
Jul 31, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Oct 7, 2025	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
Nov 6, 2024	CVE Modified	CISA-ADP
Jul 28, 2024	CVE Modified	[email protected]
Jul 1, 2024	CVE Modified	[email protected]
Jun 28, 2024	CVE Modified	[email protected]
Jun 27, 2024	CVE Modified	[email protected]
Jun 27, 2024	CVE Modified	[email protected]
Jun 27, 2024	New CVE Received	[email protected]