CVE-2021-3737

Advisory

A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability.

Affected package

Affected versions

Fixed versions

Vulnerability changelog

This vulnerability has no description

Resources

• https://pypi.org/project/python
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3737
• https://github.com/python/cpython/pull/25916
• https://bugzilla.redhat.com/show_bug.cgi?id=1995162
• https://ubuntu.com/security/CVE-2021-3737
• https://github.com/python/cpython/pull/26503
• https://bugs.python.org/issue44022
• https://python-security.readthedocs.io/vuln/urllib-100-continue-loop.html
• https://security.netapp.com/advisory/ntap-20220407-0009/
• https://www.oracle.com/security-alerts/cpujul2022.html
• https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
• https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html