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

This script is Copyright (C) 2015 Tenable Network Security, Inc.


Synopsis :

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

Description :

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.

See also :

http://www.nessus.org/u?72ae2b87
https://security.gentoo.org/glsa/201511-01

Solution :

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

Risk factor :

Medium

Family: Gentoo Local Security Checks

Nessus Plugin ID: 86701 ()

Bugtraq ID:

CVE ID:

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