The do_ed_script function in pch.c in GNU patch through 2.7.6, and patch in FreeBSD 10.1 before 10.1-RELEASE-p17, 10.2 before 10.2-BETA2-p3, 10.2-RC1 before 10.2-RC1-p2, and 0.2-RC2 before 10.2-RC2-p1, allows remote attackers to execute arbitrary commands via a crafted patch file, because a ‘!’ character can be passed to the ed program.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1418
Reference (s):
- BID:76236
- URL: http://www.securityfocus.com/bid/76236
- FREEBSD:FreeBSD-SA-15:18
- URL: https://www.freebsd.org/security/advisories/FreeBSD-SA-15:18.bsdpatch.asc
- http://rachelbythebay.com/w/2018/04/05/bangpatch/