GEN:SID 1:1657
Message WEB-CGI pagelog.cgi directory traversal attempt
Summary This event is generated when an attempt is made to execute a directory
traversal attack.
Impact Information disclosure. This is a directory traversal attempt which can
lead to information disclosure and possible exposure of sensitive
system information.
Detailed Information Directory traversal attacks usually target web, web applications and ftp
servers that do not correctly check the path to a file when requested by
the client.

This can lead to the disclosure of sensitive system information which may
be used by an attacker to further compromise the system.
Affected Systems  
Attack Scenarios An authorized user or anonymous user can use the directory traversal
technique, to browse folders outside the ftp root directory. Information
gathered may be used in further attacks against the host.
Ease of Attack Simple. No exploit software required.
Corrective Action Apply the appropriate vendor supplied patches

Upgrade the software to the latest non-affected version.
Additional References  
Rule References bugtraq: 1864
cve: 2000-0940
nessus: 10591