CVE-2019-16255 Information

Description

Ruby through 2.4.7 2.5.x through 2.5.6 and 2.6.x through 2.6.4 allows code injection if the first argument (aka the \command\ argument) to Shell[] or Shelltest in lib/shell.rb is untrusted data. An attacker can exploit this to call an arbitrary Ruby method.

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00041.html https://hackerone.com/reports/327512 https://lists.debian.org/debian-lts-announce/2019/11/msg00025.html https://lists.debian.org/debian-lts-announce/2019/12/msg00009.html https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html https://seclists.org/bugtraq/2019/Dec/31 https://seclists.org/bugtraq/2019/Dec/32 https://security.gentoo.org/glsa/202003-06 https://www.debian.org/security/2019/dsa-4587 https://www.oracle.com/security-alerts/cpujan2020.html https://www.ruby-lang.org/ja/news/2019/10/01/code-injection-shell-test-cve-2019-16255/ https://www.ruby-lang.org/ja/news/2019/10/01/ruby-2-4-8-released/ https://www.ruby-lang.org/ja/news/2019/10/01/ruby-2-5-7-released/ https://www.ruby-lang.org/ja/news/2019/10/01/ruby-2-6-5-released/

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.1