Content

Linux/Lupper.worm.a

Type
Virus
SubType
Worm
Discovery Date
11/09/2005
Length
Varies
Minimum DAT
4622 (11/07/2005)
Updated DAT
5084 (07/26/2007)
Minimum Engine
5.1.00
Description Added
11/09/2005
Description Modified
11/10/2005 7:01 AM (PT)
Risk Assessment
Corporate User
Low
Home User
Low

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Characteristics

This worm, reported on November 6, 2005, was formerly detected as Linux/Lupper.worm. This variant spreads by exploiting web servers hosting vulnerable PHP/CGI scripts. It is a modified derivative of the Linux/Slapper  and BSD/Scalper worms from which it inherits the propagation strategy. It scans an entire class B subnet created by randomly choosing the first byte from an hard-coded list of A classes and randomly generating the second byte.

The worm blindly attacks web servers by sending malicious http requests on port 80. If the target server is running one of the vulnerable scripts at specific URLs and is configured to permit external shell commands and remote file download in the PHP/CGI environment, a copy of the worm could be downloaded and executed.

Like its precedents, the infected computers form a global network of compromised servers based on peer to peer communication principles. This network can be used, for example, for Distributed Denial of Service (DDoS) attacks or other purposes because it can accept remote commands. It is also capable of harvesting email addresses stored in files on the web server.

Symptoms

Presence of the following file:

  • /tmp/lupii

One of the following ports are listening:

  • UDP 7111
  • UDP 7222

Method of Infection

This worm spreads by exploiting specific PHP/CGI script vulnerabilities that could be hosted on the following URLs:

  • http://[website]/cgi-bin/
  • http://[website]/scgi-bin/
  • http://[website]/cgi-bin/awstats/
  • http://[website]/scgi-bin/awstats/
  • http://[website]/cgi/awstats/
  • http://[website]/scgi/awstats/
  • http://[website]/scripts/
  • http://[website]/cgi-bin/stats/
  • http://[website]/scgi-bin/stats/
  • http://[website]/stats/
  • http://[website]/xmlrpc.php
  • http://[website]/xmlrpc/xmlrpc.php
  • http://[website]/xmlsrv/xmlrpc.php
  • http://[website]/blog/xmlrpc.php
  • http://[website]/drupal/xmlrpc.php
  • http://[website]/community/xmlrpc.php
  • http://[website]/blogs/xmlrpc.php
  • http://[website]/blogs/xmlsrv/xmlrpc.php
  • http://[website]/blog/xmlsrv/xmlrpc.php
  • http://[website]/blogtest/xmlsrv/xmlrpc.php
  • http://[website]/b2/xmlsrv/xmlrpc.php
  • http://[website]/b2evo/xmlsrv/xmlrpc.php
  • http://[website]/wordpress/xmlrpc.php
  • http://[website]/phpgroupware/xmlrpc.php
  • http://[website]/cgi-bin/includer.cgi
  • http://[website]/sgi-cgi/includer.cgi
  • http://[website]/includer/cgi
  • http://[website]/cgi-bin/include/includer.cgi
  • http://[website]/scgi-bin/include/includer.cgi
  • http://[website]/cgi-bin/inc/includer.cgi
  • http://[website]/scgi-bin/inc/includer.cgi
  • http://[website]/cgi-local/includer.cgi
  • http://[website]/scgi-local/includer.cgi
  • http://[website]/cgi/includer.cgi
  • http://[website]/scgi/includer.cgi
  • http://[website]/hints.pl
  • http://[website]/cgi/hints.pl
  • http://[website]/scgi/hints.pl
  • http://[website]/cgi-bin/hints.pl
  • http://[website]/scgi-bin/hints.pl
  • http://[website]/hints/hints.pl
  • http://[website]/cgi-bin/webhints/hints.pl
  • http://[website]/scgi-bin/webhints/hints.pl
  • http://[website]/hints.cgi
  • http://[website]http://[website]/cgi/hints.cgi
  • http://[website]/scgi/hints.cgi
  • http://[website]/cgi-bin/hints.cgi
  • http://[website]/scgi-bin/hints.cgi
  • http://[website]/hints/hints.cgi
  • http://[website]/cgi-bin/hints/hints.cgi
  • http://[website]/scgi-bin/hints/hints.cgi
  • http://[website]/webhints/hints.cgi
  • http://[website]/cgi-bin/webhints/hints.cgi
  • http://[website]/scgi-bin/webhints/hints.cgi 

These URLs are related to these vulnerabilities:

  1. XML-RPC for PHP parseRequest() Function Arbitrary PHP Code Execution (CVE-2005-1921)
  2. AWStats CONFIGDIR Parameter Arbitrary Command Execution   (CVE-2005-0116)
  3. WebHints Shell Command Injection Vulnerability (CVE ID 2005-1950)

Users of these products are advised to contact the respective vendors for the updated patch information.

Removal

AVERT recommends to always use latest DATs and engine. This threat will be cleaned if you have this combination.

Additional Windows ME/XP removal considerations

Variants

Variants

    N/A

All Information

Overview -

This is a virus detection. Viruses are programs that self-replicate recursively, meaning that infected systems spread the virus to other systems, which then propagate the virus further. While many viruses contain a destructive payload, it's quite common for viruses to do nothing more than spread from one system to another.

Characteristics

Characteristics -

This worm, reported on November 6, 2005, was formerly detected as Linux/Lupper.worm. This variant spreads by exploiting web servers hosting vulnerable PHP/CGI scripts. It is a modified derivative of the Linux/Slapper  and BSD/Scalper worms from which it inherits the propagation strategy. It scans an entire class B subnet created by randomly choosing the first byte from an hard-coded list of A classes and randomly generating the second byte.

The worm blindly attacks web servers by sending malicious http requests on port 80. If the target server is running one of the vulnerable scripts at specific URLs and is configured to permit external shell commands and remote file download in the PHP/CGI environment, a copy of the worm could be downloaded and executed.

Like its precedents, the infected computers form a global network of compromised servers based on peer to peer communication principles. This network can be used, for example, for Distributed Denial of Service (DDoS) attacks or other purposes because it can accept remote commands. It is also capable of harvesting email addresses stored in files on the web server.

Symptoms

Symptoms -

Presence of the following file:

  • /tmp/lupii

One of the following ports are listening:

  • UDP 7111
  • UDP 7222

Method of Infection

Method of Infection -

This worm spreads by exploiting specific PHP/CGI script vulnerabilities that could be hosted on the following URLs:

  • http://[website]/cgi-bin/
  • http://[website]/scgi-bin/
  • http://[website]/cgi-bin/awstats/
  • http://[website]/scgi-bin/awstats/
  • http://[website]/cgi/awstats/
  • http://[website]/scgi/awstats/
  • http://[website]/scripts/
  • http://[website]/cgi-bin/stats/
  • http://[website]/scgi-bin/stats/
  • http://[website]/stats/
  • http://[website]/xmlrpc.php
  • http://[website]/xmlrpc/xmlrpc.php
  • http://[website]/xmlsrv/xmlrpc.php
  • http://[website]/blog/xmlrpc.php
  • http://[website]/drupal/xmlrpc.php
  • http://[website]/community/xmlrpc.php
  • http://[website]/blogs/xmlrpc.php
  • http://[website]/blogs/xmlsrv/xmlrpc.php
  • http://[website]/blog/xmlsrv/xmlrpc.php
  • http://[website]/blogtest/xmlsrv/xmlrpc.php
  • http://[website]/b2/xmlsrv/xmlrpc.php
  • http://[website]/b2evo/xmlsrv/xmlrpc.php
  • http://[website]/wordpress/xmlrpc.php
  • http://[website]/phpgroupware/xmlrpc.php
  • http://[website]/cgi-bin/includer.cgi
  • http://[website]/sgi-cgi/includer.cgi
  • http://[website]/includer/cgi
  • http://[website]/cgi-bin/include/includer.cgi
  • http://[website]/scgi-bin/include/includer.cgi
  • http://[website]/cgi-bin/inc/includer.cgi
  • http://[website]/scgi-bin/inc/includer.cgi
  • http://[website]/cgi-local/includer.cgi
  • http://[website]/scgi-local/includer.cgi
  • http://[website]/cgi/includer.cgi
  • http://[website]/scgi/includer.cgi
  • http://[website]/hints.pl
  • http://[website]/cgi/hints.pl
  • http://[website]/scgi/hints.pl
  • http://[website]/cgi-bin/hints.pl
  • http://[website]/scgi-bin/hints.pl
  • http://[website]/hints/hints.pl
  • http://[website]/cgi-bin/webhints/hints.pl
  • http://[website]/scgi-bin/webhints/hints.pl
  • http://[website]/hints.cgi
  • http://[website]http://[website]/cgi/hints.cgi
  • http://[website]/scgi/hints.cgi
  • http://[website]/cgi-bin/hints.cgi
  • http://[website]/scgi-bin/hints.cgi
  • http://[website]/hints/hints.cgi
  • http://[website]/cgi-bin/hints/hints.cgi
  • http://[website]/scgi-bin/hints/hints.cgi
  • http://[website]/webhints/hints.cgi
  • http://[website]/cgi-bin/webhints/hints.cgi
  • http://[website]/scgi-bin/webhints/hints.cgi 

These URLs are related to these vulnerabilities:

  1. XML-RPC for PHP parseRequest() Function Arbitrary PHP Code Execution (CVE-2005-1921)
  2. AWStats CONFIGDIR Parameter Arbitrary Command Execution   (CVE-2005-0116)
  3. WebHints Shell Command Injection Vulnerability (CVE ID 2005-1950)

Users of these products are advised to contact the respective vendors for the updated patch information.

Removal -

Removal -

AVERT recommends to always use latest DATs and engine. This threat will be cleaned if you have this combination.

Additional Windows ME/XP removal considerations

Variants

Variants -

    N/A