There are three popular Red Hat Enterprise Linux clones: CentOS, Scientific Linux and Oracle Linux. All of these clone projects download source RPM packages from Red Hat and re-compile them to produce their own distributions.
These Linux distributions are often installed on servers which are connected to the internet. In that task it is essential to take care of security bugs quickly to avoid a system compromise. All of these three clones issue their own security advisories and updates.
I decided to compare the contents of these advisories as well as the delay publishing the advisories. This comparison is for version 6 of these distributions. Continue reading