CVE-2014-7186

EXPLOITED

GNU Bash through 4.3 - Denial of Service via Redirection Here Document Handling

Title source: llm

Exploitation Summary

CVE-2014-7186 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 2 public exploits.

AI-analyzed exploit summary This exploit leverages the Shellshock vulnerability (CVE-2014-7186) in Bash by crafting malicious DHCP packets. It listens for DHCP DISCOVER broadcasts, extracts client details, and responds with an OFFER and ACK containing a malicious payload in the URL option (114), triggering remote code execution.

Description

The redirection implementation in parse.y in GNU Bash through 4.3 bash43-026 allows remote attackers to cause a denial of service (out-of-bounds array access and application crash) or possibly have unspecified other impact via crafted use of here documents, aka the "redir_stack" issue.

Exploits (2)

exploitdb WORKING POC

pythonremotelinux

https://www.exploit-db.com/exploits/34860

View Code ZIP pw:eip

This exploit leverages the Shellshock vulnerability (CVE-2014-7186) in Bash by crafting malicious DHCP packets. It listens for DHCP DISCOVER broadcasts, extracts client details, and responds with an OFFER and ACK containing a malicious payload in the URL option (114), triggering remote code execution.

Classification

Working Poc 95%

Attack Type

Rce

Complexity

Moderate

Reliability

Reliable

Target: Bash (versions affected by Shellshock, e.g., 4.3.11)

No auth needed

Prerequisites: Network access to broadcast DHCP traffic · Vulnerable Bash version on target

MITRE ATT&CK

T1189 - Drive-by Compromise T1059 - Command and Scripting Interpreter

devstral-2 · analyzed Feb 19, 2026 Full analysis →

exploitdb WORKING POC

pythonremotelinux

https://www.exploit-db.com/exploits/36933

View Code ZIP pw:eip

This exploit leverages the ShellShock vulnerability (CVE-2014-7186) by injecting malicious environment variables into DHCP responses. It crafts DHCP OFFER and ACK packets with a payload in the 'dump_path' option, which is processed by the victim's bash shell via dhclient.

Classification

Working Poc 95%

Attack Type

Rce

Complexity

Moderate

Reliability

Reliable

Target: Bash (via dhclient)

No auth needed

Prerequisites: Network access to DHCP client · Vulnerable version of Bash · dhclient in use

MITRE ATT&CK

T1189 - Drive-by Compromise T1059 - Command and Scripting Interpreter

devstral-2 · analyzed Feb 19, 2026 Full analysis →

References (125)

Core 125

Core References

Mailing List vendor-advisory x_refsource_hp

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

Mailing List vendor-advisory x_refsource_hp

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

Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq

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

Mailing List vendor-advisory x_refsource_hp

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61188

Third Party Advisory third-party-advisory x_refsource_jvn

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

Mailing List vendor-advisory x_refsource_suse

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/60433

Exploit mailing-list x_refsource_mlist

http://openwall.com/lists/oss-security/2014/09/25/32

Mailing List vendor-advisory x_refsource_hp

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

Mailing List vendor-advisory x_refsource_hp

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

Mailing List vendor-advisory x_refsource_hp

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61636

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61816

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61442

Mailing List vendor-advisory x_refsource_hp

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61283

Mailing List vendor-advisory x_refsource_hp

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

Mailing List vendor-advisory x_refsource_apple

http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61654

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/62312

Mailing List vendor-advisory x_refsource_hp

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

Vendor Advisory vendor-advisory x_refsource_redhat

http://rhn.redhat.com/errata/RHSA-2014-1312.html

Mailing List vendor-advisory x_refsource_hp

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61703

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61065

Mailing List vendor-advisory x_refsource_hp

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

Mailing List vendor-advisory x_refsource_hp

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

Third Party Advisory third-party-advisory x_refsource_jvndb

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61641

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00042.html

Mailing List mailing-list x_refsource_fulldisc

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/60024

Exploit, Third Party Advisory x_refsource_misc

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61622

Various Sources vendor-advisory x_refsource_cisco

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

Vendor Advisory x_refsource_confirm

http://support.novell.com/security/cve/CVE-2014-7186.html

Mailing List mailing-list x_refsource_mlist

http://openwall.com/lists/oss-security/2014/09/28/10

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/62343

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61565

Mailing List vendor-advisory x_refsource_hp

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61313

Mailing List vendor-advisory x_refsource_hp

http://marc.info/?l=bugtraq&m=142289270617409&w=2

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61873

Mailing List mailing-list x_refsource_mlist

http://openwall.com/lists/oss-security/2014/09/26/2

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61485

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00041.html

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61618

Vendor Advisory x_refsource_confirm

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

Mailing List vendor-advisory x_refsource_hp

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

Various Sources x_refsource_confirm

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

Mailing List vendor-advisory x_refsource_hp

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61312

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/60193

Vendor Advisory x_refsource_confirm

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61479

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/60063

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/60034

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/59907

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/58200

Mailing List vendor-advisory x_refsource_hp

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61643

Vendor Advisory x_refsource_confirm

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61503

Various Sources x_refsource_confirm

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

Vendor Advisory vendor-advisory x_refsource_redhat

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

Various Sources x_refsource_confirm

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

Mailing List vendor-advisory x_refsource_hp

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61552

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61780

Various Sources x_refsource_confirm

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

Vendor Advisory x_refsource_confirm

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/62228

Mailing List vendor-advisory x_refsource_hp

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/60044

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61291

Mailing List vendor-advisory x_refsource_hp

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61287

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61711

Various Sources x_refsource_confirm

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

Mailing List vendor-advisory x_refsource_apple

http://lists.apple.com/archives/security-announce/2015/Jan/msg00003.html

Mailing List vendor-advisory x_refsource_hp

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

Vendor Advisory vendor-advisory x_refsource_redhat

http://rhn.redhat.com/errata/RHSA-2014-1311.html

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61128

Vendor Advisory x_refsource_confirm

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61471

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/60055

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61550

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61633

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00048.html

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61328

Various Sources x_refsource_confirm

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

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61129

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/61603

Various Sources x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Exploit, Third Party Advisory x_refsource_misc

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

Mailing List vendor-advisory x_refsource_hp

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

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00038.html

Various Sources x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Vendor Advisory x_refsource_confirm

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

Vendor Advisory x_refsource_confirm

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

Vendor Advisory x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Vendor Advisory vendor-advisory x_refsource_ubuntu

http://www.ubuntu.com/usn/USN-2364-1

Various Sources x_refsource_confirm

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

Vendor Advisory x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Various Sources x_refsource_confirm

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

Vendor Advisory vendor-advisory x_refsource_mandriva

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

Vendor Advisory x_refsource_confirm

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

Vendor Advisory x_refsource_confirm

https://support.apple.com/HT205267

Vendor Advisory x_refsource_confirm

http://support.apple.com/HT204244

Scores

EPSS 0.6434

EPSS Percentile 99.1%

Details

VulnCheck KEV 2018-03-01

CWE

CWE-119

Status published

Products (25)

gnu/bash 1.14.0

gnu/bash 1.14.1

gnu/bash 1.14.2

gnu/bash 1.14.3

gnu/bash 1.14.4

gnu/bash 1.14.5

gnu/bash 1.14.6

gnu/bash 1.14.7

gnu/bash 2.0

gnu/bash 2.01

... and 15 more

Published Sep 28, 2014

Tracked Since Feb 18, 2026