CVE-2014-6278 — HIGH (8.8) — White Hats Nepal

Vulnerability Description

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.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Gnu	Bash	1.14.0

Related Weaknesses (CWE)

CWE-78

References

http://jvn.jp/en/jp/JVN55667175/index.htmlThird Party Advisory
http://jvndb.jvn.jp/jvndb/JVNDB-2014-000126Third Party Advisory
http://lcamtuf.blogspot.com/2014/09/bash-bug-apply-unofficial-patch-now.htmlPatchThird Party Advisory
http://lcamtuf.blogspot.com/2014/10/bash-bug-how-we-finally-cracked.htmlThird Party Advisory
http://linux.oracle.com/errata/ELSA-2014-3093Third Party Advisory
http://linux.oracle.com/errata/ELSA-2014-3094Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00004.htmlMailing List
http://lists.opensuse.org/opensuse-updates/2014-10/msg00025.htmlMailing List
http://marc.info/?l=bugtraq&m=141330468527613&w=2Third Party Advisory
http://marc.info/?l=bugtraq&m=141345648114150&w=2Third Party Advisory
http://marc.info/?l=bugtraq&m=141383026420882&w=2Third Party Advisory
http://marc.info/?l=bugtraq&m=141383081521087&w=2Third Party Advisory
http://marc.info/?l=bugtraq&m=141383196021590&w=2Third Party Advisory
http://marc.info/?l=bugtraq&m=141383244821813&w=2Third Party Advisory
http://marc.info/?l=bugtraq&m=141383304022067&w=2Third Party Advisory

FAQ

What is CVE-2014-6278?

CVE-2014-6278 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 environme...

How severe is CVE-2014-6278?

CVE-2014-6278 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2014-6278?

Check the references section above for vendor advisories and patch information. Affected products include: Gnu Bash.