__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN BIND Vulnerabilities [2005.25.01] January 26, 2005 20:00 GMT Number P-113 ______________________________________________________________________________ PROBLEM: It is possible to overrun the q-usedns array which is used to track nameservers / addresses that have been queried. PLATFORM: BIND 8.4.4 and 8.4.5 *only* DAMAGE: A remote attacker could cause a denial of service against an affected system. SOLUTION: Upgrade to the appropriate version. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. A remote attacker may be able to crash the ASSESSMENT: service, rendering DNS inoperable. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/p-113.shtml ORIGINAL BULLETIN: http://www.isc.org/index.pl?/sw/bind/bind-security.php ADDITIONAL LINK: US-CERT Vulnerability Note VU#327633 http://www.kb.cert.org/vuls/id/327633 CVE/CAN: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CAN-2005-0033 ______________________________________________________________________________ [***** Start 2005.25.01 *****] Name: "BIND: [Added 2005.25.01] Versions affected: BIND 8.4.4 and 8.4.5 *only* Severity: LOW Exploitable: Remotely Type: Denial of Service Description: It is possible to overrun the q_usedns array which is used to track nameservers / addresses that have been queried. Workarounds: Disable recursion and glue fetching. Active Exploits: None known Fix: Upgrade to BIND 8.4.6 http://www.isc.org/sw/bind/ [***** End 2005.25.01 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Internet Systems Consortium 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. LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC) P-103: Buffer Overflow in cupsys P-104: Buffer Overflow in xpdf P-105: Sun Java Plug-In Vulnerability P-106: Ethereal 0.10.9 Released P-107: Security Vulnerability in Solaris 8 DHCP Administration Utilities P-108: libdbi-perl P-109: Cisco IOS Misformed BGP Packet Causes Reload P-110: Crafted Packet Causes Reload on Cisco Routers P-111: Cisco Multiple Crafted IPv6 Packets Cause Reload P-112: Updated less Package Fixes Security Issue