CVE-2021-32837 — Regex Denial of Service in Mechanize

CWE-1333 — Regex Denial of Service5 documents4 sources
Severity
7.5HIGHNVD
EPSS
2.8%
top 13.77%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Python-mechanize MechanizeMechanize Project MechanizeDebian Python-mechanize
Timeline
PublishedJan 17
Latest updateJan 18

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages4 packages

▶debiandebian/python-mechanize< python-mechanize 1:0.4.7-1 (bookworm)
▶CVEListV5python-mechanize/mechanize0.4.6 — 0.4.6

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

3
OSV
mechanize Regular Expression Denial of Service vulnerability↗2023-01-18
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GHSA
mechanize Regular Expression Denial of Service vulnerability↗2023-01-18
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OSV
CVE-2021-32837: mechanize, a library for automatically interacting with HTTP web servers, contains a regular expression that is vulnerable to regular expression denia↗2023-01-17
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📋Vendor Advisories

1
Debian
CVE-2021-32837: python-mechanize - mechanize, a library for automatically interacting with HTTP web servers, contai...↗2021
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