JLSEC-2026-13

doedscript 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...

patch: do_ed_script in pch.c does not block strings beginning with a ! character

A flaw was found in GNU patch through version 2.7.6. Strings beginning with a exclamation mark are not blocked by default. When ed receives an exclamation mark-prefixed command line argument, the argument is executed as a shell command. The highest threat from this vulnerability is to data...

The vulnerability of the do_ed_script function in the GNU Patch software’s source code (src/pch.c) allows a malicious actor to access confidential information and execute arbitrary commands, due to the lack of measures taken to neutralize special elements used in the operating system’s command syntax.

The vulnerability of the doedscript function in the GNU Patch software lies in its failure to prevent the neutralization of special elements used in the operating system’s commands. Exploiting this vulnerability can allow an attacker to access confidential information and execute arbitrary comman...

AZL-35102 CVE-2018-20969 affecting package patch for versions less than 2.7.6-9

doedscript 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...

DEBIAN-CVE-2018-20969

doedscript 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...

PT-2019-3242

Name of the Vulnerable Software and Affected Versions GNU patch versions prior to 2.7.7 Description The issue is related to the do ed script function in the GNU Patch utility, which fails to neutralize special elements used in operating system commands. This can be exploited by opening a crafted...

PT-2019-10405

Name of the Vulnerable Software and Affected Versions GNU patch versions through 2.7.6 Description The issue is related to the do ed script function in pch.c, which fails to block strings starting with a ! character. This syntax is specific to ed and is unrelated to shell metacharacters...

PT-2018-4344

Name of the Vulnerable Software and Affected Versions GNU patch versions through 2.7.6 patch in FreeBSD versions prior to 10.1-RELEASE-p17 patch in FreeBSD 10.2 versions prior to 10.2-BETA2-p3 patch in FreeBSD 10.2-RC1 versions prior to 10.2-RC1-p2 patch in FreeBSD 0.2-RC2 versions prior to...