From security@guardiandigital.com Tue Apr 23 17:20:57 2002 From: EnGarde Secure Linux X-Sender: security@mastermind.inside.guardiandigital.com To: engarde-security@guardiandigital.com, bugtraq@securityfocus.com Date: Tue, 23 Apr 2002 13:07:29 -0400 (EDT) Subject: [ESA-20020423-009] webalizer contains a potentially exploitable buffer overflow -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 +------------------------------------------------------------------------+ | EnGarde Secure Linux Security Advisory April 23, 2002 | | http://www.engardelinux.org/ ESA-20020423-009 | | | | Package: webalizer | | Summary: webalizer contains a potentially exploitable buffer overflow. | +------------------------------------------------------------------------+ EnGarde Secure Linux is a secure distribution of Linux that features improved access control, host and network intrusion detection, Web based secure remote management, complete e-commerce using AllCommerce, and integrated open source security tools. OVERVIEW - -------- There is a potentially exploitable buffer overflow in webalizer which could allow an attacker to compromise a host by spoofing reverse DNS queries. DETAIL - ------ The Webalizer is a fast, free web server log file analysis program. It produces highly detailed, easily configurable usage reports in HTML format, for viewing with a standard web browser. Webalizer also has the ability to perform reverse DNS lookups. An attacker with control over the victims DNS may spoof responses thus triggering a buffer overflow, potentially leading to a root compromise. SOLUTION - -------- Users of the EnGarde Professional edition can use the Guardian Digital Secure Network to update their systems automatically. EnGarde Community users should upgrade to the most recent version as outlined in this advisory. Updates may be obtained from: ftp://ftp.engardelinux.org/pub/engarde/stable/updates/ http://ftp.engardelinux.org/pub/engarde/stable/updates/ Before upgrading the package, the machine must either: a) be booted into a "standard" kernel; or b) have LIDS disabled. To disable LIDS, execute the command: # /sbin/lidsadm -S -- -LIDS_GLOBAL To install the updated package, execute the command: # rpm -Uvh You must now update the LIDS configuration by executing the command: # /usr/sbin/config_lids.pl To re-enable LIDS (if it was disabled), execute the command: # /sbin/lidsadm -S -- +LIDS_GLOBAL To verify the signatures of the updated packages, execute the command: # rpm -Kv UPDATED PACKAGES - ---------------- These updated packages are for EnGarde Secure Linux Community Edition. Source Packages: SRPMS/webalizer-2.01-1.0.4.src.rpm MD5 Sum: 4b182641716929e667b532b34143a56f Binary Packages: i386/webalizer-2.01-1.0.4.i386.rpm MD5 Sum: 26d607aa844675e643ac1cbb37c66363 i686/webalizer-2.01-1.0.4.i686.rpm MD5 Sum: 5da5952a4d1ff859e4d96b9d8ab02793 REFERENCES - ---------- Guardian Digital's public key: http://ftp.engardelinux.org/pub/engarde/ENGARDE-GPG-KEY Credit for the discovery of this bug goes to: Spybreak The Webalizer's Official Web Site: http://www.webalizer.org/ Security Contact: security@guardiandigital.com EnGarde Advisories: http://www.engardelinux.org/advisories.html - -------------------------------------------------------------------------- $Id: ESA-20020423-009-webalizer,v 1.1 2002/04/23 16:46:06 rwm Exp $ - -------------------------------------------------------------------------- Author: Ryan W. Maple, Copyright 2002, Guardian Digital, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE8xZTZHD5cqd57fu0RAiuIAKCC25gpQYHiS9159NbBVUUMTy+tLACfamqd lwBndDpjrTBmojIteweY0Xo= =8Udr -----END PGP SIGNATURE-----