CVE-2021-21289 Information

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::CookieJarload Mechanize::CookieJarsave_as Mechanizedownload Mechanize::Downloadsave Mechanize::Filesave and Mechanize::FileResponseread_body. This is fixed in version 2.7.7.

CVSS Vector

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

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 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LBVVJUL4P4KCJH4IQTHFZ4ATXY7XXZPV/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YNFZ7ROYS6V4J5L5PRAJUG2AWC7VXR2V/ https://lists.debian.org/debian-lts-announce/2021/02/msg00021.html https://security.gentoo.org/glsa/202107-17

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.3