This is a friendly heads up regarding a recently-disclosed Bash vulnerability that can impact behavior in the context of OpenSSH connections (CVE-2014-6271). In sum, the vulnerability relates to a flaw in Bash's evaluation of environment variables such that attackers can use specially-crafted environment variables for code injection [1]. For example, server-side OpenSSH restrictions might be bypassed with maliciously-crafted TERM or SSH_ORIGINAL_COMMAND variables. Bash has issued patches to fix this issue: http://ftp.gnu.org/pub/gnu/bash/bash-3.0-patches/bash30-017 http://ftp.gnu.org/pub/gnu/bash/bash-3.1-patches/bash31-018 http://ftp.gnu.org/pub/gnu/bash/bash-3.2-patches/bash32-052 http://ftp.gnu.org/pub/gnu/bash/bash-4.0-patches/bash40-039 http://ftp.gnu.org/pub/gnu/bash/bash-4.1-patches/bash41-012 http://ftp.gnu.org/pub/gnu/bash/bash-4.2-patches/bash42-048 http://ftp.gnu.org/pub/gnu/bash/bash-4.3-patches/bash43-025 --mancha [1] https://securityblog.redhat.com/2014/09/24/bash-specially-crafted-environment-variables-code-injection-attack/
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