# CVE-2014-6278

GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment variables, which allows remote attackers to execute arbitrary commands 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. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-6271, CVE-2014-7169, and CVE-2014-6277.

- Page: https://www.vulneraibility.com/cve/CVE-2014-6278
- CVSS: 8.8
- Known exploited: yes, in CISA KEV since 2025-10-02; CISA due date 2025-10-23
- EPSS: 99.67%
- Public exploit code: 5 on Exploit-DB · 3 Metasploit modules (first 2014-09-29)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-10-02)
- Weakness: CWE-78
- Published: 2014-09-30

## Affected

- gnu:bash

## References

- [other] http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004897
- [other] http://www-01.ibm.com/support/docview.wss?uid=swg21685749
- [advisory] http://marc.info/?l=bugtraq&m=141577137423233&w=2
- [other] https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk102673&src=securityAlerts
- [other] http://linux.oracle.com/errata/ELSA-2014-3093
- [advisory] http://marc.info/?l=bugtraq&m=142721162228379&w=2
- [advisory] http://marc.info/?l=bugtraq&m=142358026505815&w=2
- [other] http://www-01.ibm.com/support/docview.wss?uid=swg21686479
- [advisory] http://jvn.jp/en/jp/JVN55667175/index.html
- [advisory] http://secunia.com/advisories/60433
- [advisory] http://marc.info/?l=bugtraq&m=141383026420882&w=2
- [advisory] http://marc.info/?l=bugtraq&m=141585637922673&w=2
- [other] http://packetstormsecurity.com/files/137344/Sun-Secure-Global-Desktop-Oracle-Global-Desktop-Shellshock.html
- [advisory] http://marc.info/?l=bugtraq&m=141576728022234&w=2
- [other] http://www-01.ibm.com/support/docview.wss?uid=swg21685541
- [other] http://www.oracle.com/technetwork/topics/security/bashcve-2014-7169-2317675.html
- [advisory] http://secunia.com/advisories/61816
- [advisory] http://lists.opensuse.org/opensuse-updates/2014-10/msg00025.html
- [advisory] http://secunia.com/advisories/61442
- [advisory] http://marc.info/?l=bugtraq&m=142358078406056&w=2
- [advisory] http://secunia.com/advisories/61283
- [other] https://kc.mcafee.com/corporate/index?page=content&id=SB10085
- [advisory] http://secunia.com/advisories/61654
- [advisory] http://www.ubuntu.com/usn/USN-2380-1
- [other] http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5096315
- [advisory] http://secunia.com/advisories/62312
- [other] https://support.f5.com/kb/en-us/solutions/public/15000/600/sol15629.html
- [advisory] http://marc.info/?l=bugtraq&m=141879528318582&w=2
- [other] https://security-tracker.debian.org/tracker/CVE-2014-6278
- [other] http://www-01.ibm.com/support/docview.wss?uid=swg21685604
- [advisory] http://marc.info/?l=bugtraq&m=142118135300698&w=2
- [advisory] http://secunia.com/advisories/61703
- [advisory] http://secunia.com/advisories/61065
- [advisory] http://marc.info/?l=bugtraq&m=141383196021590&w=2
- [advisory] http://marc.info/?l=bugtraq&m=141383081521087&w=2
- [other] http://www-01.ibm.com/support/docview.wss?uid=swg21686445
- [other] http://www-01.ibm.com/support/docview.wss?uid=swg21686131
- [advisory] http://jvndb.jvn.jp/jvndb/JVNDB-2014-000126
- [advisory] http://secunia.com/advisories/61641
- [exploit] https://www.exploit-db.com/exploits/39887/
- [other] https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10648
- [advisory] http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00004.html
- [other] http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004898
- [other] http://www-01.ibm.com/support/docview.wss?uid=swg21685914
- [advisory] http://www.mandriva.com/security/advisories?name=MDVSA-2015:164
- [other] https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c04497075
- [advisory] http://secunia.com/advisories/60325
- [advisory] http://secunia.com/advisories/60024
- [other] http://packetstormsecurity.com/files/128567/CA-Technologies-GNU-Bash-Shellshock.html
- [other] http://lcamtuf.blogspot.com/2014/10/bash-bug-how-we-finally-cracked.html

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.