CVE-2024-5642

Publication date 27 June 2024

Last updated 6 March 2025

Ubuntu priority

Low

Why this priority?

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).

Read the notes from the security team

Why is this CVE low priority?

Requires unlikely API usage to be vulnerable.

Learn more about Ubuntu priority

Status

Package Ubuntu Release Status
python2.7 24.10 oracular Not in release
24.04 LTS noble Not in release
23.10 mantic Not in release
22.04 LTS jammy
Needs evaluation
20.04 LTS focal
Needs evaluation
18.04 LTS bionic
Needs evaluation
16.04 LTS xenial
Needs evaluation
14.04 LTS trusty Ignored end of ESM support, was needs-triage
python3.10 24.10 oracular Not in release
24.04 LTS noble Not in release
23.10 mantic Not in release
22.04 LTS jammy
Not affected
20.04 LTS focal Not in release
python3.11 24.10 oracular Not in release
24.04 LTS noble Not in release
23.10 mantic Ignored end of life, was needs-triage
22.04 LTS jammy
Not affected
20.04 LTS focal Not in release
python3.12 24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic Ignored end of life, was needs-triage
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
python3.4 24.10 oracular Not in release
24.04 LTS noble Not in release
23.10 mantic Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
14.04 LTS trusty Ignored end of ESM support, was needs-triage
python3.5 24.10 oracular Not in release
24.04 LTS noble Not in release
23.10 mantic Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
16.04 LTS xenial
Vulnerable
14.04 LTS trusty Ignored end of ESM support, was needs-triage
python3.6 24.10 oracular Not in release
24.04 LTS noble Not in release
23.10 mantic Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic
Not affected
python3.7 24.10 oracular Not in release
24.04 LTS noble Not in release
23.10 mantic Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic
Not affected
python3.8 24.10 oracular Not in release
24.04 LTS noble Not in release
23.10 mantic Not in release
22.04 LTS jammy Not in release
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
python3.9 24.10 oracular Not in release
24.04 LTS noble Not in release
23.10 mantic Not in release
22.04 LTS jammy Not in release
20.04 LTS focal
Needs evaluation

Notes

mdeslaur

NPN support was disabled in Python 3.10+ Python 3.8 in focal disables NPN support with OpenSSL 1.1.1 Python 3.7 in bionic disables NPN support with OpenSSL 1.1.1 Python 3.6 in bionic disables NPN support with OpenSSL 1.1.1

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
python3.10
python3.7
python3.8