Media outlets have been hard hit by computer worms based on
recently discovered Microsoft Plug and Play vulnerability (MS05-039). Computer
systems at CNN, ABC, The Financial Times, and the New York Times have all been
disrupted. General Electric, United Parcel Service and Caterpillar were some of
the other well-known organizations affected by the attack. The actual overall number of infected firms
will likely be very significant before the intensity of this threat has
diminished.
Managed Security firm, BAI Security warns such attacks are
not unusual and that organizations left unpatched against vulnerabilities can
expect to be regular targets for virus writers, hackers and phishers. We’ve
written hundreds of custom security signatures and developed correlation logic
on top of already extensive built-in IDS/IPS signatures to protect against this
exact type of activity. BAI stresses the
point that common non-managed perimeter-based security solutions are often not
effective in protecting against these threats.
BAI confirmed that none of their fully Managed Service clients were
affected by the new worm.
Virus writers have created a number of viruses targeting the
Plug and Play vulnerability following the disclosure of the security bug by
Microsoft last week and the publication of an exploit days later. Unlike the
Sasser, Nimda and Blaster outbreaks of previous years it's not immediately
clear which of a new batch of worms is causing the most damage. Zotob, the
first malware to exploit the vulnerability, has been joined by several others
including an IRC bot, a version of the infamous Rbot worm written to take
advantage of the Windows security flaw.
Windows 2000 machines left unprotected by a firewall are
most at risk from attack. Almost half of
corporate desktops run Win2K, according to June estimates from asset management
firm AssetMetrix, and when an infected machine gets plugged into these
environments all hell can break loose.
"The big organizations that are getting hit right now
have most likely introduced the infection to the internal network via infected
laptops," said Mikko Hyppönen, director of anti-virus research at Finnish
anti-virus firm F-Secure.
The UK’s
FT carries a report stating that it was hit possibly by a variant of the ZoBot
worm. CNN said its computer systems in New York
and Atlanta
were hit by an unspecified worm on Tuesday afternoon. ABC carries an AP report
of the infection of some of its computer systems. Over at the New York Times an
infection hit both newsroom and corporate PCs.