__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Debian Webmin Vulnerabilities [DSA-526-1] July 6, 2004 19:00 GMT Number O-173 ______________________________________________________________________________ PROBLEM: There are two vulnerabilities in Webmin: 1) An unknown vulnerability in Webmin 1.140 allows remote attackers to bypass access control rules; 2) the account lockout functionality in (1)Webmin 1.140 and (2) Usermin 1.070 does not parse certain character strings. PLATFORM: Debian GNU/Linux 3.0 (woody) DAMAGE: 1) Remote attackers can bypass access control rules and gain read access to configuration information for a module; 2) Remote attackers can conduct a brute force attack to guess user IDs and passwords. SOLUTION: Upgrade you Webmin package. ______________________________________________________________________________ VULNERABILITY The risk is LOW. Best practices would have added additional ASSESSMENT: access controls to system administration tools such as Webmin. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/o-173.shtml ORIGINAL BULLETIN: Debian Security Advisory DSA-526-1 http://www.debian.org/security/2004/dsa-526 CVE/CAN: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CAN-2004-0582 CAN-2004-0583 ______________________________________________________________________________ [***** Start DSA-526-1 *****] Debian Security Advisory DSA-526-1 webmin -- several vulnerabilities Date Reported: 03 Jul 2004 Affected Packages: webmin Vulnerable: Yes Security database references: In Mitre's CVE dictionary: CAN-2004-0582, CAN-2004-0583. More information: Two vulnerabilities were discovered in webmin: CAN-2004-0582: Unknown vulnerability in Webmin 1.140 allows remote attackers to bypass access control rules and gain read access to configuration information for a module. CAN-2004-0583: The account lockout functionality in (1) Webmin 1.140 and (2) Usermin 1.070 does not parse certain character strings, which allows remote attackers to conduct a brute force attack to guess user IDs and passwords. For the current stable distribution (woody), these problems have been fixed in version 0.94-7woody2. For the unstable distribution (sid), these problems have been fixed in version 1.150-1. We recommend that you update your webmin package. Fixed in: Debian GNU/Linux 3.0 (woody) Source: http://security.debian.org/pool/updates/main/w/webmin/webmin_0.94-7woody2.dsc http://security.debian.org/pool/updates/main/w/webmin/webmin_0.94-7woody2.diff.gz http://security.debian.org/pool/updates/main/w/webmin/webmin_0.94.orig.tar.gz Architecture-independent component: http://security.debian.org/pool/updates/main/w/webmin/webmin-apache_0.94-7woody2 _all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-bind8_0.94-7woody2 _all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-burner_0.94-7woody2 _all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-cluster-software_0. 94-7woody2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-cluster-useradmin_0 .94-7woody2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-core_0.94-7woody2_ all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-cpan_0.94-7woody2_ all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-dhcpd_0.94-7woody2_ all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-exports_0.94-7woody 2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-fetchmail_0.94-7 woody2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-heartbeat_0.94-7 woody2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-inetd_0.94-7woody2 _all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-jabber_0.94-7woody 2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-lpadmin_0.94-7woody 2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-mon_0.94-7woody2_ all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-mysql_0.94-7woody2 _all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-nis_0.94-7woody2_ all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-postfix_0.94-7 woody2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-postgresql_0.94-7 woody2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-ppp_0.94-7woody2_ all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-qmailadmin_0.94-7 woody2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-quota_0.94-7woody2 _all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-raid_0.94-7woody2_ all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-samba_0.94-7woody2 _all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-sendmail_0.94-7 woody2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-software_0.94-7 woody2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-squid_0.94-7woody2 _all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-sshd_0.94-7woody2 _all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-ssl_0.94-7woody2 _all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-status_0.94-7 woody2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-stunnel_0.94-7 woody2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-wuftpd_0.94-7 woody2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin-xinetd_0.94-7 woody2_all.deb http://security.debian.org/pool/updates/main/w/webmin/webmin_0.94-7woody2_ all.deb Intel IA-32: http://security.debian.org/pool/updates/main/w/webmin/webmin-grub_0.94-7woody 2_i386.deb MD5 checksums of the listed files are available in the original advisory. [***** End DSA-526-1 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Debian for the information contained in this bulletin. _______________________________________________________________________________ CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. CIAC is also a founding member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. CIAC services are available to DOE, DOE contractors, and the NIH. CIAC can be contacted at: Voice: +1 925-422-8193 (7x24) FAX: +1 925-423-8002 STU-III: +1 925-423-2604 E-mail: ciac@ciac.org Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. World Wide Web: http://www.ciac.org/ Anonymous FTP: ftp.ciac.org PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing communities receive CIAC bulletins. If you are not part of these communities, please contact your agency's response team to report incidents. Your agency's team will coordinate with CIAC. The Forum of Incident Response and Security Teams (FIRST) is a world-wide organization. A list of FIRST member organizations and their constituencies can be obtained via WWW at http://www.first.org/. This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. 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