__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Dovecot Vulnerability [Debian Security Advisory DSA-1457-1] January 11, 2008 19:00 GMT Number S-114 ______________________________________________________________________________ PROBLEM: Dovecot, a POP3 and IMAP server, only when used with LDAP authentication and base contains variables, that could allow a user to log in to the account of another user with the same password. PLATFORM: Debian GNU/Linux 4.0 (stable) DAMAGE: Could allow a user to log in to the account of another user with the same password. SOLUTION: Upgrade to the appropriate version. ______________________________________________________________________________ VULNERABILITY The risk is LOW. Could allow a user to log in to the account of ASSESSMENT: another user with the same password. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/s-114.shtml ORIGINAL BULLETIN: http://www.debian.org/security/2008/dsa-1457 CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2007-6598 ______________________________________________________________________________ [***** Start Debian Security Advisory DSA-1457-1 *****] Debian Security Advisory DSA-1457-1 dovecot -- programming error Date Reported: 09 Jan 2008 Affected Packages: dovecot Vulnerable: Yes Security database references: In Mitre's CVE dictionary: CVE-2007-6598. More information: It was discovered that Dovecot, a POP3 and IMAP server, only when used with LDAP authentication and base contains variables, could allow a user to log in to the account of another user with the same password. The old stable distribution (sarge) is not affected. For the stable distribution (etch), this problem has been fixed in version 1.0.rc15-2etch3. For the unstable distribution (sid), this problem has been fixed in version 1.0.10-1. We recommend that you upgrade your dovecot packages. Fixed in: Debian GNU/Linux 4.0 (stable) Source: http://security.debian.org/pool/updates/main/d/dovecot/dovecot_1.0.rc15.orig.tar.gz http://security.debian.org/pool/updates/main/d/dovecot/dovecot_1.0.rc15-2etch2.diff.gz http://security.debian.org/pool/updates/main/d/dovecot/dovecot_1.0.rc15-2etch3.diff.gz http://security.debian.org/pool/updates/main/d/dovecot/dovecot_1.0.rc15-2etch3.dsc http://security.debian.org/pool/updates/main/d/dovecot/dovecot_1.0.rc15-2etch2.dsc Alpha: http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch3_alpha.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch3_alpha.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch3_alpha.deb AMD64: http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch2_amd64.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch2_amd64.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch3_amd64.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch3_amd64.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch2_amd64.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch3_amd64.deb ARM: http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch3_arm.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch3_arm.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch3_arm.deb HP Precision: http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch3_hppa.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch3_hppa.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch3_hppa.deb Intel IA-32: http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch3_i386.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch3_i386.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch3_i386.deb Intel IA-64: http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch3_ia64.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch3_ia64.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch3_ia64.deb Big-endian MIPS: http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch3_mips.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch3_mips.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch3_mips.deb Little-endian MIPS: http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch3_mipsel.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch3_mipsel.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch3_mipsel.deb PowerPC: http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch3_powerpc.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch3_powerpc.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch3_powerpc.deb IBM S/390: http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch3_s390.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch3_s390.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch3_s390.deb Sun Sparc: http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch3_sparc.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch3_sparc.deb http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch3_sparc.deb MD5 checksums of the listed files are available in the original advisory. [***** End Debian Security Advisory DSA-1457-1 *****] _______________________________________________________________________________ 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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