__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Debian Password Expiration Vulnerability [DSA-421-1] January 15, 2004 18:00 GMT Number O-060 ______________________________________________________________________________ PROBLEM: A problem with mod-auth-shadow, an Apache module which authenticates users against the system shadow password database, where the expiration status of the user's account and password were not enforced. PLATFORM: Versions prior to 1.3-3.1woody.1 DAMAGE: This vulnerability would allow an otherwise authorized user to successfully authenticate, when the attempt should be rejected due to the expiration parameters. SOLUTION: Install the security update. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. An expired account may still be used to log ASSESSMENT: into the system. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/o-060.shtml ORIGINAL BULLETIN: Debian Security Advisory DSA-421-1 http://www.debian.org/security/2004/dsa-421 CVE/CAN: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2004-0041 ______________________________________________________________________________ [***** Start DSA-421-1 *****] Debian Security Advisory DSA-421-1 mod-auth-shadow -- password expiration Date Reported: 12 Jan 2004 Affected Packages: mod-auth-shadow Vulnerable: Yes Security database references: In Mitre's CVE dictionary: CAN-2004-0041 More information: David B Harris discovered a problem with mod-auth-shadow, an Apache module which authenticates users against the system shadow password database, where the expiration status of the user's account and password were not enforced. This vulnerability would allow an otherwise authorized user to successfully authenticate, when the attempt should be rejected due to the expiration parameters. For the current stable distribution (woody) this problem has been fixed in version 1.3-3.1woody.1 For the unstable distribution (sid) this problem has been fixed in version 1.4-1. We recommend that you update your mod-auth-shadow package. Fixed in: Debian GNU/Linux 3.0 (woody) Source: http://security.debian.org/pool/updates/main/m/mod-auth-shadow/mod-auth-shadow_ 1.3-3.1woody.1.dsc http://security.debian.org/pool/updates/main/m/mod-auth-shadow/mod-auth-shadow_ 1.3-3.1woody.1.diff.gz http://security.debian.org/pool/updates/main/m/mod-auth-shadow/mod-auth-shadow_ 1.3.orig.tar.gz Alpha: http://security.debian.org/pool/updates/main/m/mod-auth-shadow/libapache-mod-auth -shadow_1.3-3.1woody.1_alpha.deb ARM: http://security.debian.org/pool/updates/main/m/mod-auth-shadow/libapache-mod-auth -shadow_1.3-3.1woody.1_arm.deb Intel IA-32: http://security.debian.org/pool/updates/main/m/mod-auth-shadow/libapache-mod-auth -shadow_1.3-3.1woody.1_i386.deb Intel IA-64: http://security.debian.org/pool/updates/main/m/mod-auth-shadow/libapache-mod-auth -shadow_1.3-3.1woody.1_ia64.deb HPPA: http://security.debian.org/pool/updates/main/m/mod-auth-shadow/libapache-mod-auth -shadow_1.3-3.1woody.1_hppa.deb Motorola 680x0: http://security.debian.org/pool/updates/main/m/mod-auth-shadow/libapache-mod-auth -shadow_1.3-3.1woody.1_m68k.deb Big endian MIPS: http://security.debian.org/pool/updates/main/m/mod-auth-shadow/libapache-mod-auth -shadow_1.3-3.1woody.1_mips.deb Little endian MIPS: http://security.debian.org/pool/updates/main/m/mod-auth-shadow/libapache-mod-auth -shadow_1.3-3.1woody.1_mipsel.deb PowerPC: http://security.debian.org/pool/updates/main/m/mod-auth-shadow/libapache-mod-auth -shadow_1.3-3.1woody.1_powerpc.deb IBM S/390: http://security.debian.org/pool/updates/main/m/mod-auth-shadow/libapache-mod-auth -shadow_1.3-3.1woody.1_s390.deb Sun Sparc: http://security.debian.org/pool/updates/main/m/mod-auth-shadow/libapache-mod-auth -shadow_1.3-3.1woody.1_sparc.deb MD5 checksums of the listed files are available in the original advisory. -------------------------------------------------------------------------------- This page is also available in the following languages: dansk How to set the default document language -------------------------------------------------------------------------------- See the Debian contact page for information on contacting us. Last Modified: Thu, Jan 15 14:36:46 UTC 2004 Copyright © 2004 SPI; See license terms Debian is a registered trademark of Software in the Public Interest, Inc. [***** End DSA-421-1 *****] _______________________________________________________________________________ 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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