Shellshock, is also know as Bashdoor, this bug was first disclosed on 24th September 2014. This bug let malicious hackers craft certain requests allowing them to execute arbitrary commands to the vulnerable version of bash.

CVE:
CVE-2014-6277
CVE-2014-6278
CVE-2014-7169
CVE-2014-7186
CVE-2014-7187

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