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openSUSE Security Update : bash (openSUSE-SU-2014:1242-1) (Shellshock)

critical Nessus Plugin ID 77967

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Synopsis

The remote openSUSE host is missing a security update.

Description

The command-line shell 'bash' evaluates environment variables, which allows the injection of characters and might be used to access files on the system in some circumstances (CVE-2014-7169).

Please note that this issue is different from a previously fixed vulnerability tracked under CVE-2014-6271 and it is less serious due to the special, non-default system configuration that is needed to create an exploitable situation.

To remove further exploitation potential we now limit the function-in-environment variable to variables prefixed with BASH_FUNC_ . This hardening feature is work in progress and might be improved in later updates.

Additionaly two more security issues were fixed in bash:
CVE-2014-7186: Nested HERE documents could lead to a crash of bash.

CVE-2014-7187: Nesting of for loops could lead to a crash of bash.

Solution

Update the affected bash packages.

See Also

https://bugzilla.novell.com/show_bug.cgi?id=898346

https://bugzilla.novell.com/show_bug.cgi?id=898603

https://bugzilla.novell.com/show_bug.cgi?id=898604

https://lists.opensuse.org/opensuse-updates/2014-09/msg00052.html

Plugin Details

Severity: Critical

ID: 77967

File Name: openSUSE-2014-564.nasl

Version: 1.21

Type: local

Agent: unix

Published: 9/29/2014

Updated: 12/5/2022

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.5

CVSS v2

Risk Factor: Critical

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

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

Vulnerability Information

CPE: p-cpe:/a:novell:opensuse:readline-devel-32bit, p-cpe:/a:novell:opensuse:libreadline6-debuginfo, p-cpe:/a:novell:opensuse:bash-debugsource, p-cpe:/a:novell:opensuse:bash-lang, p-cpe:/a:novell:opensuse:libreadline6, p-cpe:/a:novell:opensuse:bash-loadables-debuginfo, p-cpe:/a:novell:opensuse:bash-loadables, p-cpe:/a:novell:opensuse:libreadline6-debuginfo-32bit, p-cpe:/a:novell:opensuse:readline-devel, cpe:/o:novell:opensuse:13.1, p-cpe:/a:novell:opensuse:bash-debuginfo-32bit, p-cpe:/a:novell:opensuse:bash-devel, p-cpe:/a:novell:opensuse:bash-debuginfo, p-cpe:/a:novell:opensuse:bash, p-cpe:/a:novell:opensuse:libreadline6-32bit

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/26/2014

Vulnerability Publication Date: 9/24/2014

CISA Known Exploited Vulnerability Due Dates: 7/28/2022

Exploitable With

Core Impact

Metasploit (Qmail SMTP Bash Environment Variable Injection (Shellshock))

Reference Information

CVE: CVE-2014-6271, CVE-2014-7169, CVE-2014-7186, CVE-2014-7187

IAVA: 2014-A-0142