Perl.Lexac

Perl.Lexac is a worm that spreads to Web servers running php scripts that are vulnerable to a "File Inclusion Flaw", which results from programming errors. The worm uses the Google and Yahoo search engines to obtain a list of vulnerable computers.

Note: The File Inclusion Flaw is independent from the PHP version of the server, and results from common coding mistakes.

Protection

• Initial Rapid Release version December 27, 2004
• Latest Rapid Release version December 27, 2004
• Initial Daily Certified version December 27, 2004
• Latest Daily Certified version June 17, 2008 revision 017
• Initial Weekly Certified release date December 29, 2004

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

• Wild Level: Low
• Number of Infections: 0 - 49
• Number of Sites: 0 - 2
• Geographical Distribution: Low
• Threat Containment: Easy
• Removal: Easy

Damage

• Damage Level: Low

Distribution

• Distribution Level: Low