__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN CVS Vulnerabilities [Debian Security Advisory DSA-715-1] April 27, 2005 16:00 GMT Number P-195 ______________________________________________________________________________ PROBLEM: Vulnerabilities have been found in CVS (Concurrent Versions System) server. PLATFORM: Debian GNU/Linux 3.0 (woody) DAMAGE: Using the pserver access method in connection with the repouid patch that Debian uses it is possible to bypass the password and gain access to the CVS repository. Also a vulnerability that may lead to a denial of service was discovered. SOLUTION: Apply available security updates. ______________________________________________________________________________ VULNERABILITY The risk is LOW. Exploiting this vulnerability may lead to ASSESSMENT: unauthorized disclosure of information. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/p-195.shtml ORIGINAL BULLETIN: http://www.debian.org/security/2005/dsa-715 CVE/CAN: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CAN-2004-1342, CAN-2004-1343 ______________________________________________________________________________ [***** Start Debian Security Advisory DSA-715-1 *****] Debian Security Advisory DSA-715-1 cvs -- several vulnerabilities Date Reported: 27 Apr 2005 Affected Packages: cvs Vulnerable: Yes Security database references: In the Debian bugtracking system: Bug 260200. In Mitre's CVE dictionary: CAN-2004-1342, CAN-2004-1343. More information: Several problems have been discovered in the CVS server, which serves the popular Concurrent Versions System. The Common Vulnerability and Exposures project identifies the following problems: * CAN-2004-1342 Maks Polunin and Alberto Garcia discovered independently that using the pserver access method in connection with the repouid patch that Debian uses it is possible to bypass the password and gain access to the repository in question. * CAN-2004-1343 Alberto Garcia discovered that a remote user can cause the cvs server to crash when the cvs-repouids file exists but does not contain a mapping for the current repository, which can be used as a denial of service attack. For the stable distribution (woody) these problems have been fixed in version 1.11.1p1debian-10. For the unstable distribution (sid) these problems have been fixed in version 1.12.9-12. We recommend that you upgrade your cvs package. Fixed in: Debian GNU/Linux 3.0 (woody) Source: http://security.debian.org/pool/updates/main/c/cvs/cvs_1.11.1p1debian- 10.dsc http://security.debian.org/pool/updates/main/c/cvs/cvs_1.11.1p1debian- 10.diff.gz http://security.debian.org/pool/updates/main/c/cvs/cvs_1.11.1p1debian.orig.tar.gz Alpha: http://security.debian.org/pool/updates/main/c/cvs/cvs_1.11.1p1debian- 10_alpha.deb ARM: http://security.debian.org/pool/updates/main/c/cvs/cvs_1.11.1p1debian- 10_arm.deb Intel IA-32: http://security.debian.org/pool/updates/main/c/cvs/cvs_1.11.1p1debian- 10_i386.deb Intel IA-64: http://security.debian.org/pool/updates/main/c/cvs/cvs_1.11.1p1debian- 10_ia64.deb HPPA: http://security.debian.org/pool/updates/main/c/cvs/cvs_1.11.1p1debian- 10_hppa.deb Motorola 680x0: http://security.debian.org/pool/updates/main/c/cvs/cvs_1.11.1p1debian- 10_m68k.deb Big endian MIPS: http://security.debian.org/pool/updates/main/c/cvs/cvs_1.11.1p1debian- 10_mips.deb Little endian MIPS: http://security.debian.org/pool/updates/main/c/cvs/cvs_1.11.1p1debian- 10_mipsel.deb PowerPC: http://security.debian.org/pool/updates/main/c/cvs/cvs_1.11.1p1debian- 10_powerpc.deb IBM S/390: http://security.debian.org/pool/updates/main/c/cvs/cvs_1.11.1p1debian- 10_s390.deb Sun Sparc: http://security.debian.org/pool/updates/main/c/cvs/cvs_1.11.1p1debian- 10_sparc.deb MD5 checksums of the listed files are available in the original advisory. [***** End Debian Security Advisory DSA-715-1 *****] _______________________________________________________________________________ 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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