CVE-2014-6277

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 code or cause a denial of service (uninitialized memory access, and untrusted-pointer read and write operations) 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 and CVE-2014-7169.

CVSS v2.0 NVD

10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

64.33% chance of exploitation in the next 30 days, 99th percentile

Published

2014-09-27

Updated

2024-08-06

ExploitDB entries (3)

• https://www.exploit-db.com/exploits/36933
• https://www.exploit-db.com/exploits/35081
• https://www.exploit-db.com/exploits/34860

Security advisories

• http://lcamtuf.blogspot.com/2014/09/bash-bug-apply-unofficial-patch-now.html
• http://www.mandriva.com/security/advisories?name=MDVSA-2015:164
• http://www.oracle.com/technetwork/topics/security/bashcve-2014-7169-2317675.html
• http://www.ubuntu.com/usn/USN-2380-1
• http://www.vmware.com/security/advisories/VMSA-2014-0010.html
• https://kc.mcafee.com/corporate/index?page=content&id=SB10085

References

• CVE Record
• NVD entry