__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN DHCP Vulnerability [Debian Security Advisory DSA-1388-1] October 19, 2007 17:00 GMT Number S-019 [REVISED 23 Oct 2007] ______________________________________________________________________________ PROBLEM: A DHCP server for automatic IP address assignment, did not correctly allocate space for network replies. This could potentially allow a malicious DHCP client to execute arbitrary code upon the DHCP server. PLATFORM: Debian GNU/Linux 3.1 (sarge) and 4.0 (etch) Red Hat Enterprise Linux AS, ES (v. 2.1) Red Hat Linux Advanced Workstation 2.1 for the Itanium Processing DAMAGE: Could potentially allow a malicious DHCP client to execute arbitrary code upon the DHCP server. SOLUTION: Upgrade to the appropriate version. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. Could potentially allow a malicious DHCP ASSESSMENT: client to execute arbitrary code upon the DHCP server. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/s-019.shtml ORIGINAL BULLETIN: http://www.debian.org/security/2007/dsa-1388 ADDITIONAL LINK: http://rhn.redhat.com/errata/RHSA-2007-0970.html CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2007-5365 ______________________________________________________________________________ REVISION HISTORY: 10/23/2007 - revised S-019 to add a link to Red Hat RHSA-2007:0970-3 for Red Hat Enterprise Linux AS, ES (v. 2.1) and Red Hat Linux Advanced Workstation 2.1 for the Itanium Processing. [***** Start Debian Security Advisory DSA-1388-1 *****] Debian Security Advisory DSA-1388-1 dhcp -- buffer overflow Date Reported: 18 Oct 2007 Affected Packages: dhcp Vulnerable: Yes Security database references: In the Debian bugtracking system: Bug 446354. In Mitre's CVE dictionary: CVE-2007-5365. More information: It was discovered that dhcp, a DHCP server for automatic IP address assignment, didn't correctly allocate space for network replies. This could potentially allow a malicious DHCP client to execute arbitary code upon the DHCP server. For the old stable distribution (sarge), this problem has been fixed in version 2.0pl5-19.1sarge3. For the stable distribution (etch), this problem has been fixed in version 2.0pl5-19.5etch1. For the unstable distribution (sid), this problem will be fixed shortly. We recommend that you upgrade your dhcp package. Fixed in: Debian GNU/Linux 3.1 (sarge) Source: http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.1sarge3.diff.gz http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.1sarge3.dsc Alpha: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.1sarge3_alpha.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.1sarge3_alpha.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.1sarge3_alpha.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.1sarge3_alpha.deb AMD64: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.1sarge3_amd64.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.1sarge3_amd64.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.1sarge3_amd64.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.1sarge3_amd64.udeb ARM: http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.1sarge3_arm.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.1sarge3_arm.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.1sarge3_arm.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.1sarge3_arm.deb Intel IA-32: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.1sarge3_i386.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.1sarge3_i386.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.1sarge3_i386.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.1sarge3_i386.deb Intel IA-64: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.1sarge3_ia64.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.1sarge3_ia64.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.1sarge3_ia64.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.1sarge3_ia64.deb Big-endian MIPS: http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.1sarge3_mips.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.1sarge3_mips.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.1sarge3_mips.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.1sarge3_mips.udeb Little-endian MIPS: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.1sarge3_mipsel.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.1sarge3_mipsel.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.1sarge3_mipsel.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.1sarge3_mipsel.deb PowerPC: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.1sarge3_powerpc.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.1sarge3_powerpc.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.1sarge3_powerpc.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.1sarge3_powerpc.udeb IBM S/390: http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.1sarge3_s390.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.1sarge3_s390.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.1sarge3_s390.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.1sarge3_s390.deb Sun Sparc: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.1sarge3_sparc.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.1sarge3_sparc.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.1sarge3_sparc.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.1sarge3_sparc.deb Debian GNU/Linux 4.0 (etch) Source: http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.5etch1.dsc http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.5etch1.diff.gz Alpha: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.5etch1_alpha.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.5etch1_alpha.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.5etch1_alpha.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.5etch1_alpha.deb AMD64: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.5etch1_amd64.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.5etch1_amd64.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.5etch1_amd64.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.5etch1_amd64.deb ARM: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.5etch1_arm.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.5etch1_arm.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.5etch1_arm.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.5etch1_arm.deb HP Precision: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.5etch1_hppa.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.5etch1_hppa.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.5etch1_hppa.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.5etch1_hppa.deb Intel IA-32: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.5etch1_i386.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.5etch1_i386.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.5etch1_i386.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.5etch1_i386.udeb Intel IA-64: http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.5etch1_ia64.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.5etch1_ia64.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.5etch1_ia64.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.5etch1_ia64.udeb Big-endian MIPS: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.5etch1_mips.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.5etch1_mips.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.5etch1_mips.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.5etch1_mips.deb Little-endian MIPS: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.5etch1_mipsel.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.5etch1_mipsel.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.5etch1_mipsel.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.5etch1_mipsel.deb PowerPC: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.5etch1_powerpc.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.5etch1_powerpc.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.5etch1_powerpc.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.5etch1_powerpc.deb IBM S/390: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.5etch1_s390.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.5etch1_s390.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.5etch1_s390.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.5etch1_s390.deb Sun Sparc: http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client-udeb_2.0pl5-19.5etch1_sparc.udeb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-client_2.0pl5-19.5etch1_sparc.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp_2.0pl5-19.5etch1_sparc.deb http://security.debian.org/pool/updates/main/d/dhcp/dhcp-relay_2.0pl5-19.5etch1_sparc.deb MD5 checksums of the listed files are available in the original advisory. [***** End Debian Security Advisory DSA-1388-1 *****] _______________________________________________________________________________ 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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