cve/2018/CVE-2018-20969.md

CVE-2018-20969

Description

do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638, but the ! syntax is specific to ed, and is unrelated to a shell metacharacter.

POC

Reference

• http://packetstormsecurity.com/files/154124/GNU-patch-Command-Injection-Directory-Traversal.html
• http://packetstormsecurity.com/files/154124/GNU-patch-Command-Injection-Directory-Traversal.html
• https://github.com/irsl/gnu-patch-vulnerabilities
• https://github.com/irsl/gnu-patch-vulnerabilities
• https://seclists.org/bugtraq/2019/Aug/29
• https://seclists.org/bugtraq/2019/Aug/29

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/irsl/gnu-patch-vulnerabilities
• https://github.com/phonito/phonito-vulnerable-container