* Name: ht://Dig (htsearch CGI)
* Versions affected: 3.1.0b2 and more recent, including 3.1.5 and 3.2.0b3
* Vulnerability: (Potential remote exposure. Denial of Service.)
* Details:
The htsearch CGI runs as both the CGI and as a command-line program.
The command-line program accepts the -c [filename] to read in an
alternate configuration file. On the other hand, no filtering is done
to stop the CGI program from taking command-line arguments, so a
remote user can force the CGI to stall until it times out (resulting
in a DOS) or read in a different configuration file.
For a remote exposure, a specified configuration file would need to
be readable via the webserver UID, e.g. via anonymous FTP with upload
enabled or samba world-readable log files are the possible targets)
to potentially retrieve files readable by the webserver UID.
e.g.
nothing_found_file: /path/to/the/file/we/steal
* Potential exploit:
http://your.host/cgi-bin/htsearch?-c/dev/zero
http://your.host/cgi-bin/htsearch?-c/path/to/my.file
* Fix:
Upgrade to current prerelease versions of 3.1.6 or 3.2.0b4, or apply
attached patches.
Prerelease versions are available from <http://www.htdig.org/files/snapshots/>
%htsearch-3.1.x.patch
htsearch-3.1.x.patch
%htsearch-3.2.x.patch
htsearch-3.2.x.patch
