Scientific Linux Security Update : bash on SL7.x x86_64 (20170801)

high Nessus Plugin ID 102638
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VPR Score: 6.7

Synopsis

The remote Scientific Linux host is missing one or more security updates.

Description

Security Fix(es) :

- An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634)

- An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances.
(CVE-2016-7543)

- A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session.
(CVE-2016-9401)

Solution

Update the affected bash, bash-debuginfo and / or bash-doc packages.

See Also

http://www.nessus.org/u?360383cc

Plugin Details

Severity: High

ID: 102638

File Name: sl_20170801_bash_on_SL7_x.nasl

Version: 3.4

Type: local

Agent: unix

Published: 8/22/2017

Updated: 1/14/2021

Dependencies: 12634

Risk Information

Risk Factor: High

VPR Score: 6.7

CVSS v2.0

Base Score: 7.2

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS v3.0

Base Score: 8.4

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: p-cpe:/a:fermilab:scientific_linux:bash, p-cpe:/a:fermilab:scientific_linux:bash-debuginfo, p-cpe:/a:fermilab:scientific_linux:bash-doc, x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Available: undefined

Patch Publication Date: 8/1/2017

Vulnerability Publication Date: 1/19/2017

Reference Information

CVE: CVE-2016-0634, CVE-2016-7543, CVE-2016-9401