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CVE-2021-32837— mechanize vulnerable to ReDoS

Quick assessment

Affected
python-mechanize mechanize
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mechanize是Sparkle Motion开源的一个 ruby​​ 库。用于自动与网站交互。 Mechanize 0.4.6之前版本存在安全漏洞，该漏洞源于易受正则表达式拒绝服务（ReDoS）攻击。

CVSS 7.5 · High EPSS 28.87% · P98

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2021-32837

Vulnerability Information
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Vulnerability Title
mechanize vulnerable to ReDoS
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Vulnerability Title
Mechanize 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mechanize是Sparkle Motion开源的一个 ruby​​ 库。用于自动与网站交互。 Mechanize 0.4.6之前版本存在安全漏洞，该漏洞源于易受正则表达式拒绝服务（ReDoS）攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
python-mechanize mechanize 0.4.6 ~ 0.4.6 -

II. Public POCs for CVE-2021-32837

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III. Intelligence Information for CVE-2021-32837

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Patches & Fixes for CVE-2021-32837 (1)

Mailing List Discussions for CVE-2021-32837 (1)

Other References for CVE-2021-32837 (3)

IV. Related Vulnerabilities

Same product: mechanize
Same weakness: CWE-1333

V. Comments for CVE-2021-32837

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