GLSA-201410-01 : Bash: Multiple vulnerabilities (Shellshock)

This script is Copyright (C) 2014-2016 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-201410-01
(Bash: Multiple vulnerabilities)

Florian Weimer, Todd Sabin, Michal Zalewski et al. discovered further
parsing flaws in Bash. The unaffected Gentoo packages listed in this GLSA
contain the official patches to fix the issues tracked as CVE-2014-6277,
CVE-2014-7186, and CVE-2014-7187. Furthermore, the official patch known
as “function prefix patch” is included which prevents the
exploitation of CVE-2014-6278.

Impact :

A remote attacker could exploit these vulnerabilities to execute
arbitrary commands or cause a Denial of Service condition via various
vectors.

Workaround :

There is no known workaround at this time.

See also :

https://security.gentoo.org/glsa/201410-01

Solution :

All Bash 3.1 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=app-shells/bash-3.1_p22:3.1'
All Bash 3.2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=app-shells/bash-3.2_p56:3.2'
All Bash 4.0 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=app-shells/bash-4.0_p43:4.0'
All Bash 4.1 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=app-shells/bash-4.1_p16:4.1'
All Bash 4.2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=app-shells/bash-4.2_p52'

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 9.0
(CVSS2#E:POC/RL:ND/RC:ND)
Public Exploit Available : true

Family: Gentoo Local Security Checks

Nessus Plugin ID: 78060 ()

Bugtraq ID: 70152
70154
70165
70166

CVE ID: CVE-2014-6277
CVE-2014-6278
CVE-2014-7186
CVE-2014-7187

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