CVE
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.
MITRE ATT&CK TTPs 8
T1003 T1021 T1059 T1071 T1078 T1133 T1190 T1558
OS Credential Dumping
Credential Access
Remote Services
Lateral Movement
Command and Scripting Interpreter
Execution
Application Layer Protocol
Command And Control
Valid Accounts
Defense Evasion
External Remote Services
Persistence
Exploit Public-Facing Application
Initial Access
Steal or Forge Kerberos Tickets
Credential Access