vulnerability
Ubuntu: (CVE-2024-5642): python3.5 vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:L/Au:N/C:P/I:N/A:P) | Jun 27, 2024 | Jun 26, 2025 | Mar 27, 2026 |
Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:P)
Published
Jun 27, 2024
Added
Jun 26, 2025
Modified
Mar 27, 2026
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).
Solution
no-fix-ubuntu-package
References
- CVE-2024-5642
- https://attackerkb.com/topics/CVE-2024-5642
- EUVD-EUVD-2024-46822
- http://www.openwall.com/lists/oss-security/2024/06/28/4
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2024-46822
- 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://www.cve.org/CVERecord?id=CVE-2024-5642
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