CVE-2014-6277 Code injection in n/a
Remote attackers can execute arbitrary code or cause denial of service via crafted environment variables in GNU Bash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2014-6277?
CVE-2014-6277 is a critical code injection vulnerability in n/a, published on 27 Sep 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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 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.
Weakness: CWE-78
Which versions are affected by CVE-2014-6277?
It affects 1 product.
Products include Gnu Bash.
How do I fix CVE-2014-6277?
Apply the vendor's patch.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2014-6277 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2014-6277 exists.
Public exploit code: 3 Exploit-DB entries.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2014-6277, GHSA-55cc-h8m2-x3mp, UBUNTU-CVE-2014-6277.