ITinfo: Worm Infects Microsoft IIS and Solaris Servers

Solaris & IIS At Risk

CERT warns of new Internet worm

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Worm Infects Microsoft IIS and Solaris Servers

by Dave Murphy
ISSN 1535-3613

CERT, Carnegie Mellon University's Computer Emergency Response Team, has received numerous reports of a worm that infects servers running Sun Microsystems Solaris OS and Microsoft Internet Information Server (IIS).

The worm takes advantage of known security flaws in both servers' software to compromise systems and deface web pages, according to CERT, which has named the malicious code the "sadmind/IIS worm."

"We have received a very large number of reports of systems being compromised by the worm, both Solaris and IIS systems," said Chad Dougherty, Internet security analyst at CERT. "We started receiving reports early on Monday." The Solaris system is entered by using a 2-year-old buffer overflow vulnerability. Then a security hole that was uncovered seven months ago is used to break into the IIS system.

Once infected the Solaris system is used to scan and compromise other Solaris systems and IIS systems, CERT said.

Patches to both Sun's and Microsoft's software have been publicly available for quite a while. However, it's our experience that many network administrators don't make full efforts to secure their servers, even when patches are freely released and well documented.

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References

CERT Advisory
Sun Microsystems
Microsoft
Message Center

Microsoft IIS 5.0 Opens Security Hole in Windows 2000

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