-----BEGIN PGP SIGNED MESSAGE-----

===========================================================================
              AUSCERT External Security Bulletin Redistribution
                             
                     ESB-2000.040 -- FreeBSD-SA-00:06
                  htdig port allows remote reading of files
                                07 March 2000

===========================================================================

FreeBSD have released the following advisory describing a vulnerability
in htdig versions prior to 3.1.5.  This vulnerability may allow remote
users to read any file that is accessible to the user that htdig executes
as.

- --------------------------BEGIN INCLUDED TEXT--------------------

- -----BEGIN PGP SIGNED MESSAGE-----

=============================================================================
FreeBSD-SA-00:06                                           Security Advisory
                                                                FreeBSD, Inc.

Topic:          htdig port allows remote reading of files

Category:       ports
Module:         htdig
Announced:      2000-03-01
Affects:        Ports collection before the correction date.
Corrected:      2000-02-28
FreeBSD only:   NO

I.   Background

The ht://Dig system is a complete world wide web indexing and searching
system for a small domain or intranet.

II.  Problem Description

There is a security hole in the htsearch cgi-bin program for versions of
htdig prior to 3.1.5, which allows remote users to read any file on the
local system that is accessible to the user ID running htsearch (usually
the user ID running the webserver process, user 'nobody' in the default
installation of apache).

Note that the htdig utility is not installed by default, nor is it "part
of FreeBSD" as such: it is part of the FreeBSD ports collection, which
contains over 3100 third-party applications in a ready-to-install format.

FreeBSD makes no claim about the security of these third-party
applications, although an effort is underway to provide a security audit
of the most security-critical ports.

III. Impact

If you have not chosen to install the htdig port/package, then your system
is not vulnerable. If you have, then local or remote users who can connect
to a web server which contains the htsearch cgi-bin executable can read
any file on your system which is accessible to the user running the
htsearch process (typically user nobody). It is not currently believed
that an attacker can exploit this hole to modify or delete files, but they
may be able to use the ability to read files to mount a further attack
based on other security holes they discover.

IV.  Workaround

Remove the /usr/local/share/apache/cgi-bin/htsearch file, if you do not
make use of it.

V.  Solution

One of the following:

1) Upgrade your entire ports collection and rebuild the htdig port.

2) Reinstall a new package obtained from:

ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-3-stable/textproc/htdig-3.1.5.tgz
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-current/textproc/htdig-3.1.5.tgz
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-current/textproc/htdig-3.1.5.tgz

(Note: it may be several days before the new packages appear on the FTP
site)

3) download a new port skeleton for the htdig port from:

http://www.freebsd.org/ports/

and use it to rebuild the port.

4) Use the portcheckout utility to automate option (3) above. The
portcheckout port is available in /usr/ports/devel/portcheckout or the
package can be obtained from:

ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-3-stable/devel/portcheckout-2.0.tgz
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-current/devel/portcheckout-2.0.tgz
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-current/devel/portcheckout-2.0.tgz

- -----BEGIN PGP SIGNATURE-----
Version: 2.6.2

iQCVAwUBOL1um1UuHi5z0oilAQGtnwP+JsTP4KCrAO/fEIMG70a79tPsLeqUiuyP
ihPc5Rw/e6wguW8qPLXvLGSsT5zzkXLOeuww+2ViPpYehTkD4cB1zt3UsWeNSGa+
kkWQyYFwK/3BaHbsN8COu4xa5c4B+VdqbFXa3G/cIM+MRRTxlhrDWqaJp58UKpD3
OA7HcbSdSKk=
=A+Nm
- -----END PGP SIGNATURE-----

- --------------------------END INCLUDED TEXT--------------------

This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content.  The decision to use any or all of this information is
the responsibility of each user or organisation, and should be done so in
accordance with site policies and procedures.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the original authors to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

	http://www.auscert.org.au/Information/advisories.html

If you believe that your system has been compromised, contact AusCERT or
your representative in FIRST (Forum of Incident Response and Security
Teams).

Internet Email: auscert@auscert.org.au
Facsimile:	(07) 3365 7031
Telephone:	(07) 3365 4417 (International: +61 7 3365 4417)
		AusCERT personnel answer during Queensland business hours
		which are GMT+10:00 (AEST).
		On call after hours for emergencies.


-----BEGIN PGP SIGNATURE-----
Version: 2.6.3i
Charset: noconv
Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key

iQCVAwUBOMy1qSh9+71yA2DNAQEdtwP/YA0T/6Z7SA1gfe3+ZkSNyQJQ/TEGLuBE
fSETSseFxat/e5Xhi576HMDZzlExL4y1jcRNaE51pS+tSuZ4qs0Uw+EMAlznl10K
nTYg7ttNjI1RM7lnTx2Lzk4vIK77yqSaO1/VEOl6RPj+/iqfZjYWUDTeEE2ExJpD
FiRhS2YreF0=
=D+mP
-----END PGP SIGNATURE-----