OpenSSH 'child_set_env()' Function Security Bypass Vulnerability

Summary
OpenSSH is prone to a security-bypass vulnerability.
Impact
The security bypass allows remote attackers to bypass intended environment restrictions by using a substring located before a wildcard character.
Solution
Updates are available.
Insight
sshd in OpenSSH before 6.6 does not properly support wildcards on AcceptEnv lines in sshd_config.
Affected
Versions prior to OpenSSH 6.6 are vulnerable.
Detection
Check the version.
References