A potential high security vulnerability was found in the glibc library, which has been assigned CVE-2015-0235 and is commonly referred to as ‘GHOST’.
GHOST is a ‘buffer overflow’ bug affecting the gethostbyname() and gethostbyname2() function calls in the glibc library. This vulnerability allows a remote attacker that is able to make an application call to either of these functions to execute arbitrary code with the permissions of the user running the application.
Currently, all versions of glibc shipped with all variants of Red Hat Enterprise Linux and CentOS are affected, patching/upgrading the OS is highly recommended to avoid server compromise.
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