Executive Summary

Summary
Title Bash: Multiple vulnerabilities
Informations
Name GLSA-201210-05 First vendor Publication 2012-10-20
Vendor Gentoo Last vendor Modification 2012-10-20
Severity (Vendor) Normal Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 6.9 Attack Range Local
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 3.4 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

Two vulnerabilities have been found in Bash, the worst of which may allow execution of arbitrary code.

Background

Bash is the standard GNU Bourne Again SHell.

Description

Two vulnerabilities have been found in Bash:

* Bash example scripts do not handle temporary files securely (CVE-2008-5374).
* Improper bounds checking in Bash could cause a stack-based buffer overflow (CVE-2012-3410).

Impact

A remote attacker could entice a user to open a specially crafted Bash script, possibly resulting in execution of arbitrary code with the privileges of the process, or a Denial of Service condition of the Bash executable.

A local attacker may be able to perform symlink attacks to overwrite arbitrary files with the privileges of the user running the application or bypass shell access restrictions.

Workaround

There is no known workaround at this time.

Resolution

All Bash users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-shells/bash-4.2_p37"

References

[ 1 ] CVE-2008-5374 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2008-5374
[ 2 ] CVE-2012-3410 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3410

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-201210-05.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-201210-05.xml

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer
50 % CWE-59 Improper Link Resolution Before File Access ('Link Following')

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:21954
 
Oval ID: oval:org.mitre.oval:def:21954
Title: RHSA-2011:1073: bash security, bug fix, and enhancement update (Low)
Description: bash-doc 3.2 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/cb#####.? temporary file, related to the (1) aliasconv.sh, (2) aliasconv.bash, and (3) cshtobash scripts.
Family: unix Class: patch
Reference(s): RHSA-2011:1073-01
CESA-2011:1073
CVE-2008-5374
 Version: 4
Platform(s): Red Hat Enterprise Linux 5
CentOS Linux 5
 Product(s): bash
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:23045
 
Oval ID: oval:org.mitre.oval:def:23045
Title: ELSA-2011:1073: bash security, bug fix, and enhancement update (Low)
Description: bash-doc 3.2 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/cb#####.? temporary file, related to the (1) aliasconv.sh, (2) aliasconv.bash, and (3) cshtobash scripts.
Family: unix Class: patch
Reference(s): ELSA-2011:1073-01
CVE-2008-5374
 Version: 6
Platform(s): Oracle Linux 5
 Product(s): bash
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:27689
 
Oval ID: oval:org.mitre.oval:def:27689
Title: DEPRECATED: ELSA-2011-1073 -- bash security, bug fix, and enhancement update (low)
Description: [3.2-32] - Dont include backup files Resolves: #700157 [3.2-31] - Use 'mktemp' for temporary files Resolves: #700157 [3.2-30] - Added man page references to systemwide .bash_logout Resolves: #592979 [3.2-29] - Readline glitch, when editing line with more spaces and resizing window Resolves: #525474 [3.2-28] - Fix the memory leak in read builtin Resolves: #618393 - Dont append slash to non-directories Resolves: #583919 [3.2-27] - Test .dynamic section if has PROGBITS or NOBITS Resolves: #484809 - Better random number generator Resolves: #492908 - Allow to source scripts with embeded NULL chars Resolves: #503701 [3.2-26] - vi mode redo insert fixed Resolves: #575076 - Dont show broken pipe messages for builtins Resolves: #546529 - Dont include loadables in doc dir Resolves: #663656 - Enable system-wide .bash_logout for login shells Resolves: #592979 [3.2-25] - Dont abort source builtin Resolves: #448508 - Correctly place cursor Resolves: #463880 - Minor man page clarification for trap builtin Resolves: #504904
Family: unix Class: patch
Reference(s): ELSA-2011-1073
CVE-2008-5374
 Version: 4
Platform(s): Oracle Linux 5
 Product(s): bash
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 1

OpenVAS Exploits

Date Description
2012-10-22 Name : Gentoo Security Advisory GLSA 201210-05 (bash)
File : nvt/glsa_201210_05.nasl
2012-08-14 Name : Mandriva Update for bash MDVSA-2012:128 (bash)
File : nvt/gb_mandriva_MDVSA_2012_128.nasl
2012-07-30 Name : CentOS Update for bash CESA-2011:1073 centos5 x86_64
File : nvt/gb_CESA-2011_1073_bash_centos5_x86_64.nasl
2011-09-23 Name : CentOS Update for bash CESA-2011:1073 centos5 i386
File : nvt/gb_CESA-2011_1073_bash_centos5_i386.nasl
2011-07-22 Name : RedHat Update for bash RHSA-2011:1073-01
File : nvt/gb_RHSA-2011_1073-01_bash.nasl
2011-02-18 Name : RedHat Update for bash RHSA-2011:0261-01
File : nvt/gb_RHSA-2011_0261-01_bash.nasl
2010-01-19 Name : Mandriva Update for bash MDVSA-2010:004 (bash)
File : nvt/gb_mandriva_MDVSA_2010_004.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
51690 bash-doc Multiple Script Temporary File Symlink Arbitrary File Overwrite

Nessus® Vulnerability Scanner

Date Description
2015-01-19 Name : The remote Solaris system is missing a security patch for third-party software.
File : solaris11_bash_20141107.nasl - Type : ACT_GATHER_INFO
2014-11-17 Name : The remote Red Hat host is missing a security update.
File : redhat-RHSA-2011-1090.nasl - Type : ACT_GATHER_INFO
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2012-408.nasl - Type : ACT_GATHER_INFO
2013-07-12 Name : The remote Oracle Linux host is missing a security update.
File : oraclelinux_ELSA-2011-0261.nasl - Type : ACT_GATHER_INFO
2013-04-20 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2013-032.nasl - Type : ACT_GATHER_INFO
2013-01-25 Name : The remote SuSE 11 host is missing one or more security updates.
File : suse_11_bash-120713.nasl - Type : ACT_GATHER_INFO
2012-10-22 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201210-05.nasl - Type : ACT_GATHER_INFO
2012-09-06 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2012-128.nasl - Type : ACT_GATHER_INFO
2012-08-14 Name : The remote SuSE 10 host is missing a security-related patch.
File : suse_bash-8217.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing a security update.
File : sl_20110216_bash_on_SL4_x.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing a security update.
File : sl_20110721_bash_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2011-09-23 Name : The remote CentOS host is missing a security update.
File : centos_RHSA-2011-1073.nasl - Type : ACT_GATHER_INFO
2011-07-22 Name : The remote Red Hat host is missing a security update.
File : redhat-RHSA-2011-1073.nasl - Type : ACT_GATHER_INFO
2011-02-17 Name : The remote Red Hat host is missing a security update.
File : redhat-RHSA-2011-0261.nasl - Type : ACT_GATHER_INFO
2010-01-14 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2010-004.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 11:37:38
  • Multiple Updates