Details

A weakness has been discovered in the random number generator used

by OpenSSL on Debian and Ubuntu systems. As a result of this

weakness, certain encryption keys are much more common than they

should be, such that an attacker could guess the key through a

brute-force attack given minimal knowledge of the system. This

particularly affects the use of encryption keys in OpenSSH.

This vulnerability only affects operating systems which (like

Ubuntu) are based on Debian. However, other systems can be

indirectly affected if weak keys are imported into them.

We consider this an extremely serious vulnerability, and urge all

users to act immediately to secure their systems.