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CVE-2014-6271

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Date: September 24, 2014

GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution, aka "ShellShock." NOTE: the original fix for this issue was incorrect; CVE-2014-7169 has been assigned to cover the vulnerability that is still present after the incorrect fix.

Language: SHELL

Severity Score

9.8

Related Resources (175)

Url: https://securityblog.redhat.com/2014/09/24/bash-specially-crafted-environment-variables-code-injection-attack/

Url: http://marc.info/?l=bugtraq&m=141383026420882&w=2

Url: http://jvn.jp/en/jp/JVN55667175/index.html

Url: http://marc.info/?l=bugtraq&m=141383081521087&w=2

Url: http://packetstormsecurity.com/files/128567/CA-Technologies-GNU-Bash-Shellshock.html

Url: http://jvndb.jvn.jp/jvndb/JVNDB-2014-000126

Url: http://marc.info/?l=bugtraq&m=141383244821813&w=2

Url: http://secunia.com/advisories/60947

Url: http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673

Url: http://www.securityfocus.com/archive/1/533593/100/0/threaded

Url: http://marc.info/?l=bugtraq&m=141576728022234&w=2

Url: http://marc.info/?l=bugtraq&m=141216207813411&w=2

Url: http://marc.info/?l=bugtraq&m=141383465822787&w=2

Url: https://kb.bluecoat.com/index?page=content&id=SA82

Url: http://rhn.redhat.com/errata/RHSA-2014-1293.html

Url: https://support.citrix.com/article/CTX200223

Url: https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10648

Url: http://marc.info/?l=bugtraq&m=141319209015420&w=2

Url: http://secunia.com/advisories/61471

Url: http://linux.oracle.com/errata/ELSA-2014-1294.html

Url: http://packetstormsecurity.com/files/128517/VMware-Security-Advisory-2014-0010.html

Url: http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5096315

Url: http://www-01.ibm.com/support/docview.wss?uid=swg21685749

Url: http://secunia.com/advisories/60024

Url: http://secunia.com/advisories/61873

Url: http://secunia.com/advisories/61633

Url: http://www.mandriva.com/security/advisories?name=MDVSA-2015:164

Url: http://secunia.com/advisories/61129

Url: http://secunia.com/advisories/61128

Url: http://packetstormsecurity.com/files/128573/Apache-mod_cgi-Remote-Command-Execution.html

Url: http://marc.info/?l=bugtraq&m=141694386919794&w=2

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2014-6271

Url: http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00034.html

Url: https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c04497075

Url: https://www.exploit-db.com/exploits/40938/

Url: http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00029.html

Url: http://marc.info/?l=bugtraq&m=142118135300698&w=2

Url: http://www-01.ibm.com/support/docview.wss?uid=swg21686447

Url: http://www-01.ibm.com/support/docview.wss?uid=swg21686445

Url: http://marc.info/?l=bugtraq&m=142358026505815&w=2

Url: http://www.websense.com/support/article/kbarticle/Vulnerabilities-resolved-in-TRITON-APX-Version-8-0

Url: http://www.debian.org/security/2014/dsa-3032

Url: http://rhn.redhat.com/errata/RHSA-2014-1294.html

Url: http://marc.info/?l=bugtraq&m=141450491804793&w=2

Url: https://security-tracker.debian.org/tracker/CVE-2014-6271

Url: http://www-01.ibm.com/support/docview.wss?uid=swg21685914

Url: http://secunia.com/advisories/61485

Url: http://secunia.com/advisories/60034

Url: http://secunia.com/advisories/61641

Url: http://secunia.com/advisories/60433

Url: http://secunia.com/advisories/61643

Url: http://secunia.com/advisories/60325

Url: http://secunia.com/advisories/62228

Url: http://marc.info/?l=bugtraq&m=142805027510172&w=2

Url: https://www.exploit-db.com/exploits/37816/

Url: http://secunia.com/advisories/61816

Url: https://access.redhat.com/articles/1200223

Url: https://help.ecostruxureit.com/display/public/UADCO8x/StruxureWare+Data+Center+Operation+Software+Vulnerability+Fixes

Url: http://secunia.com/advisories/59737

Url: http://www.us-cert.gov/ncas/alerts/TA14-268A

Url: http://marc.info/?l=bugtraq&m=142546741516006&w=2

Url: http://www.kb.cert.org/vuls/id/252743

Url: http://marc.info/?l=bugtraq&m=141383196021590&w=2

Url: http://marc.info/?l=bugtraq&m=141383353622268&w=2

Url: http://marc.info/?l=bugtraq&m=142358078406056&w=2

Url: http://marc.info/?l=bugtraq&m=141330425327438&w=2

Url: http://secunia.com/advisories/60044

Url: http://secunia.com/advisories/62343

Url: http://secunia.com/advisories/61654

Url: https://support.apple.com/kb/HT6535

Url: http://secunia.com/advisories/61547

Url: http://marc.info/?l=bugtraq&m=142721162228379&w=2

Url: http://marc.info/?l=bugtraq&m=141235957116749&w=2

Url: http://marc.info/?l=bugtraq&m=141383304022067&w=2

Url: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140926-bash

Url: http://secunia.com/advisories/61700

Url: http://secunia.com/advisories/61703

Url: http://marc.info/?l=bugtraq&m=141577241923505&w=2

Url: https://support.citrix.com/article/CTX200217

Url: http://marc.info/?l=bugtraq&m=141383138121313&w=2

Url: https://www.exploit-db.com/exploits/38849/

Url: http://www-01.ibm.com/support/docview.wss?uid=isg3T1021361

Url: https://kc.mcafee.com/corporate/index?page=content&id=SB10085

Url: http://linux.oracle.com/errata/ELSA-2014-1293.html

Url: http://marc.info/?l=bugtraq&m=142719845423222&w=2

Url: http://marc.info/?l=bugtraq&m=142113462216480&w=2

Url: http://support.novell.com/security/cve/CVE-2014-6271.html

Url: https://www.exploit-db.com/exploits/34879/

Url: https://access.redhat.com/security/cve/CVE-2014-6271

Url: http://secunia.com/advisories/59907

Url: http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00028.html

Url: http://secunia.com/advisories/61780

Url: http://secunia.com/advisories/60055

Url: http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00044.html

Url: http://secunia.com/advisories/61542

Url: http://secunia.com/advisories/61711

Url: http://lists.opensuse.org/opensuse-updates/2014-10/msg00023.html

Url: http://secunia.com/advisories/61715

Url: http://www-01.ibm.com/support/docview.wss?uid=isg3T1021272

Url: http://marc.info/?l=bugtraq&m=141577137423233&w=2

Url: http://www-01.ibm.com/support/docview.wss?uid=isg3T1021279

Url: http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00040.html

Url: http://www-01.ibm.com/support/docview.wss?uid=swg21685541

Url: http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00004.html

Url: http://www-01.ibm.com/support/docview.wss?uid=swg21686479

Url: http://www.qnap.com/i/en/support/con_show.php?cid=61

Url: http://marc.info/?l=bugtraq&m=141345648114150&w=2

Url: http://seclists.org/fulldisclosure/2014/Oct/0

Url: https://www.suse.com/support/shellshock/

Url: http://secunia.com/advisories/60063

Url: http://rhn.redhat.com/errata/RHSA-2014-1354.html

Url: http://www.oracle.com/technetwork/topics/security/bashcve-2014-7169-2317675.html

Url: http://secunia.com/advisories/61550

Url: http://secunia.com/advisories/61552

Url: http://marc.info/?l=bugtraq&m=141585637922673&w=2

Url: http://secunia.com/advisories/61312

Url: http://marc.info/?l=bugtraq&m=141216668515282&w=2

Url: http://secunia.com/advisories/61676

Url: https://support.f5.com/kb/en-us/solutions/public/15000/600/sol15629.html

Url: http://secunia.com/advisories/61313

Url: http://archives.neohapsis.com/archives/bugtraq/2014-10/0101.html

Url: http://marc.info/?l=bugtraq&m=141879528318582&w=2

Url: http://secunia.com/advisories/61328

Url: http://secunia.com/advisories/61603

Url: http://www-01.ibm.com/support/docview.wss?uid=swg21686084

Url: http://www.securityfocus.com/bid/70103

Url: http://www.novell.com/support/kb/doc.php?id=7015721

Url: https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c04518183

Url: http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004915

Url: https://www.exploit-db.com/exploits/40619/

Url: http://www-01.ibm.com/support/docview.wss?uid=swg21686246

Url: https://www.arista.com/en/support/advisories-notices/security-advisories/1008-security-advisory-0006

Url: http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00037.html

Url: http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004879

Url: https://bugzilla.redhat.com/show_bug.cgi?id=1141597

Url: https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk102673&src=securityAlerts

Url: http://secunia.com/advisories/60193

Url: http://secunia.com/advisories/61283

Url: http://secunia.com/advisories/61442

Url: http://secunia.com/advisories/61287

Url: http://secunia.com/advisories/61565

Url: http://marc.info/?l=bugtraq&m=141577297623641&w=2

Url: http://secunia.com/advisories/61855

Url: http://marc.info/?l=bugtraq&m=141330468527613&w=2

Url: http://secunia.com/advisories/61857

Url: http://secunia.com/advisories/58200

Url: http://packetstormsecurity.com/files/161107/SonicWall-SSL-VPN-Shellshock-Remote-Code-Execution.html

Url: http://www-01.ibm.com/support/docview.wss?uid=swg21686131

Url: http://www-01.ibm.com/support/docview.wss?uid=swg21686494

Url: http://www.vmware.com/security/advisories/VMSA-2014-0010.html

Url: http://lists.opensuse.org/opensuse-updates/2014-10/msg00025.html

Url: http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004898

Url: http://secunia.com/advisories/61291

Url: http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004897

Url: http://www-01.ibm.com/support/docview.wss?uid=swg21685604

Url: http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00049.html

Url: http://lcamtuf.blogspot.com/2014/09/quick-notes-about-bash-bug-its-impact.html

Url: http://secunia.com/advisories/61503

Url: https://nvd.nist.gov/vuln/detail/CVE-2014-6271

Url: http://advisories.mageia.org/MGASA-2014-0388.html

Url: http://www.novell.com/support/kb/doc.php?id=7015701

Url: http://rhn.redhat.com/errata/RHSA-2014-1295.html

Url: http://www-01.ibm.com/support/docview.wss?uid=swg21687079

Url: http://packetstormsecurity.com/files/137376/IPFire-Bash-Environment-Variable-Injection-Shellshock.html

Url: http://support.apple.com/kb/HT6495

Url: http://www.ubuntu.com/usn/USN-2362-1

Url: https://www.exploit-db.com/exploits/42938/

Url: http://www-01.ibm.com/support/docview.wss?uid=swg21685733

Url: http://secunia.com/advisories/61065

Url: https://access.redhat.com/node/1200223

Url: https://www.exploit-db.com/exploits/39918/

Url: http://secunia.com/advisories/61188

Url: http://secunia.com/advisories/59272

Url: http://secunia.com/advisories/62312

Url: https://www.mend.io/vulnerability-database/CVE-2014-6271

Severity Score

9.8

Weakness Type (CWE)

OS Command Injections

CWE-78

Top Fix

Upgrade Version

Upgrade to version 4.3.27

CVSS v3.1

Base Score:	9.8
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	10.0
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	COMPLETE
Integrity (I):	COMPLETE
Availability (A):	COMPLETE
Additional information:

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