This Secunia notice answers some of the questions raised last weekend about why Fedora issued a warning for users to not update their systems until further notice. The source for Secunia is Red Hat, not a third party this time. It reads:
Last week Red Hat detected an intrusion on certain of its computer systems and took immediate action. While the investigation into the intrusion is on-going, our initial focus was to review and test the distribution channel we use with our customers, Red Hat Network (RHN) and its associated security measures. Based on these efforts, we remain highly confident that our systems and processes prevented the intrusion from compromising RHN or the content distributed via RHN and accordingly believe that customers who keep their systems updated using Red Hat Network are not at risk. We are issuing this alert primarily for those who may obtain Red Hat binary packages via channels other than those of official Red Hat subscribers.
In connection with the incident, the intruder was able to sign a small number of OpenSSH packages relating only to Red Hat Enterprise Linux 4 (i386 and x86_64 architectures only) and Red Hat Enterprise Linux 5 (x86_64 architecture only)…
More updates sure to follow. Does anyone else remember the quick dismissals about the small study that said this was possible? This appears to be limited but how many mirrors are ever checked and how frequently?