-Caveat Lector-

Software bug bites US military

Computer vandals have been exploiting a flaw in Microsoft's Windows 2000
operating system even before the software giant warned people of its
existence.

A server operated by the US Army has already been attacked via the
security hole.

If successfully exploited the loophole can give attackers control over a
target machine.

In an advisory, Microsoft called the flaw "critical" and has been telling
customers to patch their computers in case they fall victim.

Bad bug

The flaw is present in servers running Windows 2000, up to and including
service pack 3, and version 5.0 of Microsoft's Internet Information Server
(IIS) software.

It arises because of Microsoft's implementation of a program called
WebDAV that lets different people remotely manage what is on a net
server.

Using a cleverly crafted HTTP request an attacker could exploit the flaw
to gain control of a server and either crash it or make it run programs of
their choice.

Microsoft has issued an advisory about the flaw, calling it "critical" and said
an attacker that successfully exploited it could gain "complete control"
over a machine.

The software company has also provided a patch to close the loophole as
well as other tools to help customers protect themselves against attack.

Often there is a hiatus between the discovery of a flaw in software and its
active exploitation by vandals.

However, in this case at least one net server has been attacked via the
WebDAV loophole before security advisories have been issued.

The server, belonging to the US Army, was successfully attacked in early
March. No serious damage was done because it was not connected to any
important systems. Once patched it was attacked again.

Microsoft has reportedly spent time talking to customers warning them to
take action over the flaw.

Security firm ISS has also reported seeing isolated attacks carried out using
the WebDAV flaw.

Story from BBC NEWS:
http://news.bbc.co.uk/go/pr/fr/-/2/hi/technology/2860189.stm

Published: 2003/03/18 11:13:49

© BBC MMIII
Forwarded for your information.  The text and intent of the article
have to stand on their own merits.
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