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Category:   Application (Web Server/CGI)  >   ht//Dig Vendors:   ht//Dig Group
(Mandrake Issues Fix) ht://Dig Search Engine Software Has Remote Denial of Service and Local Information Disclosure Bugs in htsearch
SecurityTracker Alert ID:  1002683
SecurityTracker URL:  http://securitytracker.com/id/1002683
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Nov 1 2001
Impact:   Denial of service via network, Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.1.0b2 and more recent, including 3.1.5 and 3.2.0b3
Description:   A vulnerability was reported in the ht://Dig htsearch search engine CGI software that allows remote users to conduct denial of service attacks against the search engine. It also users who can place a special control file on the system to retrieve files from the server.

It is reported that htsearch accepts a -c [filename] option to read in an alternate configuration file. A remote user can specify this command line argument to cause the CGI to stall until it times out or cause it to read in another configuration file.

If a local user places an alternate configuration file on the system, a remote user may then be able to remotely view files on the system that are readable by the web server.

The following type of URLs can be used to trigger this vulnerability:

http://[targethost]/cgi-bin/htsearch?-c/dev/zero
http://[targethost]/cgi-bin/htsearch?-c/path/to/my.file

Impact:   A remote user can cause a denial of service condition. If a local user can place an alternate configuration file on the system (via FTP or Samba or some other means not related to htsearch) and that configuration file is readable by the web server, then a remote user can view files on the system that are readable by the web server.
Solution:   The vendor has released a fix.

Linux-Mandrake 7.2:
bd0aebf9736ffffc8e94890310de7fae 7.2/RPMS/htdig-3.1.5-6.1mdk.i586.rpm
6a84ee0f0dda0b523af2b360fb190919 7.2/SRPMS/htdig-3.1.5-6.1mdk.src.rpm

Mandrake Linux 8.0:
3ea0880ab82a79e0dff84b8eb8802066 8.0/RPMS/htdig-3.1.5-9.1mdk.i586.rpm
5b14977038008263d9fa1e692664b2ed 8.0/SRPMS/htdig-3.1.5-9.1mdk.src.rpm

Mandrake Linux 8.0 (PPC):
a045ff01add5eebe015947b69c1b759d ppc/8.0/RPMS/htdig-3.1.5-9.1mdk.ppc.rpm
5b14977038008263d9fa1e692664b2ed ppc/8.0/SRPMS/htdig-3.1.5-9.1mdk.src.rpm

Mandrake Linux 8.1:
4416ba76bc1bc8fe21aaa278d600fd00 8.1/RPMS/htdig-3.2.0-0.5mdk.i586.rpm
6ba81746cf6b915e66fa11d05bff70f9 8.1/RPMS/htdig-devel-3.2.0-0.5mdk.i586.rpm
09e82bd967c00e553541f8ce424b53e9 8.1/RPMS/htdig-web-3.2.0-0.5mdk.i586.rpm
e1893fed436193ee26b60aea46ecc5e4 8.1/SRPMS/htdig-3.2.0-0.5mdk.src.rpm

See the Source Message for the vendor's advisory containing directions on how to apply the appropriate fix.

Vendor URL:  www.htdig.org/ (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Mandriva/Mandrake)

Message History:   This archive entry is a follow-up to the message listed below.
Oct 11 2001 ht://Dig Search Engine Software Has Remote Denial of Service and Local Information Disclosure Bugs in htsearch



 Source Message Contents

Subject:  [Security Announce] MDKSA-2001:083 - htdig update


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

________________________________________________________________________

                Mandrake Linux Security Update Advisory
________________________________________________________________________

Package name:           htdig
Date:                   November 1st, 2001
Advisory ID:            MDKSA-2001:083

Affected versions:      7.2, 8.0, 8.1
________________________________________________________________________

Problem Description:

 A problem was discovered in the ht://Dig web indexing and searching
 program.  Nergal reported a vulnerability in htsearch that allows a
 remote user to pass the -c parameter, to use a specific config file, 
 to the htsearch program when running as a CGI.  A malicious user could
 point to a file like /dev/zero and force the CGI to stall until it
 times out.  Repeated attacks could result in a DoS.  As well, if the
 user has write permission on the server and can create a file with
 certain entries, they can point the server to it and retrieve any file
 readable by the webserver UID.
________________________________________________________________________

References:

  http://sourceforge.net/tracker/index.php?func=detail&aid=458013&group_id=4593&atid=104593
________________________________________________________________________

Please verify the update prior to upgrading to ensure the integrity of
the downloaded package.  You can do this with the command:
  rpm --checksig package.rpm
You can get the GPG public key of the Mandrake Linux Security Team at
  http://www.linux-mandrake.com/en/security/RPM-GPG-KEYS
If you use MandrakeUpdate, the verification of md5 checksum and GPG
signature is performed automatically for you.

Linux-Mandrake 7.2:
bd0aebf9736ffffc8e94890310de7fae  7.2/RPMS/htdig-3.1.5-6.1mdk.i586.rpm
6a84ee0f0dda0b523af2b360fb190919  7.2/SRPMS/htdig-3.1.5-6.1mdk.src.rpm

Mandrake Linux 8.0:
3ea0880ab82a79e0dff84b8eb8802066  8.0/RPMS/htdig-3.1.5-9.1mdk.i586.rpm
5b14977038008263d9fa1e692664b2ed  8.0/SRPMS/htdig-3.1.5-9.1mdk.src.rpm

Mandrake Linux 8.0 (PPC):
a045ff01add5eebe015947b69c1b759d  ppc/8.0/RPMS/htdig-3.1.5-9.1mdk.ppc.rpm
5b14977038008263d9fa1e692664b2ed  ppc/8.0/SRPMS/htdig-3.1.5-9.1mdk.src.rpm

Mandrake Linux 8.1:
4416ba76bc1bc8fe21aaa278d600fd00  8.1/RPMS/htdig-3.2.0-0.5mdk.i586.rpm
6ba81746cf6b915e66fa11d05bff70f9  8.1/RPMS/htdig-devel-3.2.0-0.5mdk.i586.rpm
09e82bd967c00e553541f8ce424b53e9  8.1/RPMS/htdig-web-3.2.0-0.5mdk.i586.rpm
e1893fed436193ee26b60aea46ecc5e4  8.1/SRPMS/htdig-3.2.0-0.5mdk.src.rpm
________________________________________________________________________

Bug IDs fixed (see https://qa.mandrakesoft.com for more information):

________________________________________________________________________

To upgrade automatically, use MandrakeUpdate.

If you want to upgrade manually, download the updated package from one
of our FTP server mirrors and upgrade with "rpm -Fvh *.rpm".

You can download the updates directly from one of the mirror sites
listed at:

  http://www.linux-mandrake.com/en/ftp.php3.

Updated packages are available in the "updates/[ver]/RPMS/" directory.
For example, if you are looking for an updated RPM package for
Mandrake Linux 8.0, look for it in "updates/8.0/RPMS/".  Updated source
RPMs are available as well, but you generally do not need to download
them.

Please be aware that sometimes it takes the mirrors a few hours to
update.

You can view other security advisories for Mandrake Linux at:

  http://www.linux-mandrake.com/en/security/

If you want to report vulnerabilities, please contact

  security@linux-mandrake.com
________________________________________________________________________

Mandrake Linux has two security-related mailing list services that
anyone can subscribe to:

security-announce@linux-mandrake.com

  Mandrake Linux's security announcements mailing list.  Only
  announcements are sent to this list and it is read-only.

security-discuss@linux-mandrake.com

  Mandrake Linux's security discussion mailing list.  This list is open
  to anyone to discuss Mandrake Linux security specifically and Linux
  security in general.

To subscribe to either list, send a message to
  sympa@linux-mandrake.com
with "subscribe [listname]" in the body of the message.

To remove yourself from either list, send a message to
  sympa@linux-mandrake.com
with "unsubscribe [listname]" in the body of the message.

To get more information on either list, send a message to
  sympa@linux-mandrake.com
with "info [listname]" in the body of the message.

Optionally, you can use the web interface to subscribe to or unsubscribe
from either list:

  http://www.linux-mandrake.com/en/flists.php3#security
________________________________________________________________________

Type Bits/KeyID     Date       User ID
pub  1024D/22458A98 2000-07-10 Linux Mandrake Security Team
  <security@linux-mandrake.com>


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