CVE-2024-5642

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).

The following products are affected by CVE-2024-5642 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2024-5642.

URL	Resource
http://www.openwall.com/lists/oss-security/2024/06/28/4
https://github.com/python/cpython/commit/39258d3595300bc7b952854c915f63ae2d4b9c3e
https://github.com/python/cpython/commit/a2cdbb6e8188ba9ba8b356b28d91bff60e86fe31
https://github.com/python/cpython/issues/121227
https://github.com/python/cpython/pull/23014
https://jbp.io/2024/06/27/cve-2024-5535-openssl-memory-safety.html
https://mail.python.org/archives/list/[email protected]/thread/PLP2JI3PJY33YG6P5BZYSSNU66HASXBQ/
https://nvd.nist.gov/vuln/detail/CVE-2024-5642
https://security.netapp.com/advisory/ntap-20240726-0005/
https://www.cve.org/CVERecord?id=CVE-2024-5642