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A remote exploit vulnerability in bash has been discovered in Linux, which will allow attackers to execute arbitrary code.
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From http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-6271
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GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code 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.
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The severity of this exploit is high, and you should look to update bash on all of your linux machines as soon as possible.
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Please contact us if you require any support in updating your servers or machines
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This affects all versions of Bash through version 4.3. Check and update to a patched version.
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Additional Sources
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