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CVE-2021-32837

Published: 17 January 2023

mechanize, a library for automatically interacting with HTTP web servers, contains a regular expression that is vulnerable to regular expression denial of service (ReDoS) prior to version 0.4.6. If a web server responds in a malicious way, then mechanize could crash. Version 0.4.6 has a patch for the issue.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
python-mechanize
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

jammy Not vulnerable
(1:0.4.7-1)
kinetic Not vulnerable
(1:0.4.8+pypi-4)
lunar Not vulnerable
(1:0.4.8+pypi-5)
mantic Not vulnerable
(1:0.4.8+pypi-5)
noble Not vulnerable
(1:0.4.8+pypi-5)
trusty Ignored
(end of standard support)
upstream
Released (0.4.6)
xenial Needs triage

Patches:
upstream: https://github.com/python-mechanize/mechanize/commit/dd05334448e9f39814bab044d2eaa5ef69b410d6

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H