GEN:SID 1:1601
Message WEB-CGI htsearch arbitrary file read attempt
Summary This event is generated when an attempt is made to read a file on a host using a well known vulnerability in htdig.
Impact Severe. Unauthorized file access
Detailed Information Some versions of htdig allow inclusions to be made from configuration files as a parameter to the htsearch function. Any file can be included by enclosing it in single quotes ('foo').

Using this vulnerability, any single quoted input string (`....`) is included as an index file by htsearch. This allows an attacker to read any file on the host.
Affected Systems HTDig versions 3.1.1, 3.1.2, 3.1.3, 3.1.4 and 3.2.0b1
Attack Scenarios A input form with a textbox named "Exclude" and http post action handled by htsearch or a url similar to http://www.foo.com/cgi-bin/htsearch?Exclude=%60/anyfile%60 can be used to access files on your host. %60 is the single quote caracter "`".
Ease of Attack Simple. No exploit scripts required
Corrective Action Upgrade to the latest non-affected version of the software.
Additional References Bugtraq:
http://www.securityfocus.com/bid/1026
Rule References bugtraq: 1026
cve: 2000-0208
nessus: 10105