The SNMP fiasco: steps you need to take
Source: SecurityFocus
First off, we received a bulletin from Counterpane, a company which monitors SNMP on its clients machines, saying that the vulnerability does not appear to have been exploited yet. So basically, you're playing 'beat the clock' with the black hat community, and chances are that if you act soon, you'll win.
Second, this is a developing story to which we haven't got any final answers and for which our recommendations are both preliminary and incomplete, being cobbled together from numerous bulletins and a bit of homebrew tinkering.
Our inbox has been filling steadily with advisories, so we will update this item periodically as developments warrant. If you don't find the information you're looking for below, check back later.