CVE-2021-21289

 

Published at: - 02-02-2021 08:15

Last modified: - 26-04-2022 05:07

Total changes: - 7

Description

Mechanize is an open-source ruby library that makes automated web interaction easy. In Mechanize from version 2.0.0 and before version 2.7.7 there is a command injection vulnerability. Affected versions of mechanize allow for OS commands to be injected using several classes' methods which implicitly use Ruby's Kernel.open method. Exploitation is possible only if untrusted input is used as a local filename and passed to any of these calls: Mechanize::CookieJar#load, Mechanize::CookieJar#save_as, Mechanize#download, Mechanize::Download#save, Mechanize::File#save, and Mechanize::FileResponse#read_body. This is fixed in version 2.7.7.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://rubygems.org/gems/mechanize/
• https://github.com/sparklemotion/mechanize/commit/66a6a1bfa653a5f13274a396a5e5441238656aa0
• https://github.com/sparklemotion/mechanize/security/advisories/GHSA-qrqm-fpv6-6r8g
• https://github.com/sparklemotion/mechanize/releases/tag/v2.7.7
• FEDORA-2021-24fdc228e4-Mailing List, Third Party Advisory
• FEDORA-2021-db8ebc547e-Mailing List, Third Party Advisory
• [debian-lts-announce] 20210216 [SECURITY] [DLA 2561-1] ruby-mechanize security update-Mailing List, Third Party Advisory
• GLSA-202107-17-Third Party Advisory

 

Keywords

NVD

 

CVE-2021-21289

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures