GLSA-201511-01 : MirBSD Korn Shell: Arbitrary code execution

Medium Nessus Plugin ID 86701


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-201511-01 (MirBSD Korn Shell: Arbitrary code execution)

Improper sanitation of environment import allows for appending of values to passed parameters.
Impact :

An attacker who already had access to the environment could so append values to parameters passed through programs (including sudo(8) or setuid) to shell scripts, including indirectly, after those programs intended to sanitise the environment, e.g. invalidating the last $PATH component.
Workaround :

There is no known workaround at this time.


All mksh users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=app-shells/mksh-50c'

See Also

Plugin Details

Severity: Medium

ID: 86701

File Name: gentoo_GLSA-201511-01.nasl

Version: $Revision: 2.1 $

Type: local

Published: 2015/11/03

Modified: 2015/11/03

Dependencies: 12634

Risk Information

Risk Factor: Medium

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:mksh, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 2015/11/02

Reference Information

GLSA: 201511-01