Vulnerability Note VU#259785

AWStats fails to validate input supplied to pluginmode parameter

Overview

AWStats performs inadequate validation on user-controlled data that is supplied to the pluginmode parameter. Exploitation of this vulnerability may allow a remote attacker to execute arbitrary commands.

I. Description

AWStats is a Perl CGI script that collects and graphically displays statistics from web, FTP, and mail servers. AWStats provides the ability to extend its functionality via plug-ins. Inadequate validation on input supplied to the pluginmode parameter may allow an attacker to execute PERL commands (i.e. the system() function), which can be used to execute arbitrary operating system or shell commands with the privileges of the web server process.

II. Impact

A remote, unauthenticated attacker may be able to execute arbitrary commands or cause a denial-of-service condition.

III. Solution

Upgrade

According to public reports, this vulnerability was corrected in AWStats version 6.4. While this version is available to the public, it is still considered under development (beta). Users are encouraged to consult the AWStats Download page for more information.





Systems Affected

Vendor Status Date Updated

AWStats Vulnerable 25-Feb-2005



References



http://packetstorm.linuxsecurity.com/0501-exploits/AWStatsVulnAnalysis.pdf

http://secunia.com/advisories/14299/

http://marc.theaimsgroup.com/?l=bugtraq&m=110840530924124&w=2

http://awstats.sourceforge.net/docs/awstats_changelog.txt

http://awstats.sourceforge.net/