Loop with Unreachable Exit Condition ('Infinite Loop') Affecting python3-libs package, versions <0:3.6.8-45.el8
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Test your applications- Snyk ID SNYK-RHEL8-PYTHON3LIBS-4287714
- published 26 Aug 2021
- disclosed 9 Aug 2021
How to fix?
Upgrade RHEL:8 python3-libs to version 0:3.6.8-45.el8 or higher.
This issue was patched in RHSA-2022:1986.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python3-libs package and not the python3-libs package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2021-3737
- https://access.redhat.com/errata/RHSA-2022:1986
- https://bugs.python.org/issue44022
- https://bugzilla.redhat.com/show_bug.cgi?id=1995162
- https://github.com/python/cpython/pull/25916
- https://github.com/python/cpython/pull/26503
- https://python-security.readthedocs.io/vuln/urllib-100-continue-loop.html
- https://security.netapp.com/advisory/ntap-20220407-0009/
- https://ubuntu.com/security/CVE-2021-3737
- 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