CVE - CVE-2024-5642

CVE-ID
CVE-2024-5642	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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).
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:http://www.openwall.com/lists/oss-security/2024/06/28/4 URL:http://www.openwall.com/lists/oss-security/2024/06/28/4 MISC:https://github.com/python/cpython/commit/39258d3595300bc7b952854c915f63ae2d4b9c3e URL:https://github.com/python/cpython/commit/39258d3595300bc7b952854c915f63ae2d4b9c3e MISC:https://github.com/python/cpython/issues/121227 URL:https://github.com/python/cpython/issues/121227 MISC:https://github.com/python/cpython/pull/23014 URL:https://github.com/python/cpython/pull/23014 MISC:https://jbp.io/2024/06/27/cve-2024-5535-openssl-memory-safety.html URL:https://jbp.io/2024/06/27/cve-2024-5535-openssl-memory-safety.html MISC:https://mail.python.org/archives/list/security-announce@python.org/thread/PLP2JI3PJY33YG6P5BZYSSNU66HASXBQ/ URL:https://mail.python.org/archives/list/security-announce@python.org/thread/PLP2JI3PJY33YG6P5BZYSSNU66HASXBQ/
Assigning CNA
Python Software Foundation
Date Record Created
20240604	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240604)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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