__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Usermin Programming Error [DSA-1177-1] September 18, 2006 17:00 GMT Number Q-318 ______________________________________________________________________________ PROBLEM: It is possible for a normal user to disable the login shell of the root account via Usermin. PLATFORM: Usermin version 1.110-3.1 and version 1.220 DAMAGE: It might be possible to obtain root access to the system. SOLUTION: Apply current patches. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. It may be possible for a local user to ASSESSMENT: obtain root access to the system. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/q-318.shtml ORIGINAL BULLETIN: http://www.debian.org/security/2006/dsa-1177 CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4246 ______________________________________________________________________________ [***** Start DSA-1177-1 *****] Debian Security Advisory DSA-1177-1 usermin -- programming error Date Reported: 15 Sep 2006 Affected Packages: usermin Vulnerable: Yes Security database references: In the Debian bugtracking system: Bug 374609. In Mitre's CVE dictionary: CVE-2006-4246. More information: Hendrik Weimer discovered that it is possible for a normal user to disable the login shell of the root account via usermin, a web-based administration tool. For the stable distribution (sarge) this problem has been fixed in version 1.110-3.1. In the upstream distribution this problem is fixed in version 1.220. We recommend that you upgrade your usermin package. Fixed in: Debian GNU/Linux 3.1 (sarge) Source: http://security.debian.org/pool/updates/main/u/usermin/usermin_1.110-3.1.dsc http://security.debian.org/pool/updates/main/u/usermin/usermin_1.110-3.1.diff.gz http://security.debian.org/pool/updates/main/u/usermin/usermin_1.110.orig.tar.gz Architecture-independent component: http://security.debian.org/pool/updates/main/u/usermin/usermin-at_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-changepass_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-chfn_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-commands_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-cron_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-cshrc_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-fetchmail_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-forward_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-gnupg_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-htaccess_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-htpasswd_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-mailbox_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-man_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-mysql_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-plan_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-postgresql_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-proc_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-procmail_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-quota_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-schedule_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-shell_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-spamassassin_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-ssh_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-tunnel_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-updown_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin-usermount_1.110-3.1_all.deb http://security.debian.org/pool/updates/main/u/usermin/usermin_1.110-3.1_all.deb MD5 checksums of the listed files are available in the original advisory. [***** End DSA-1177-1 *****] _______________________________________________________________________________ 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. 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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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