__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN isakmpd - Programming Error [DSA-1175-1] September 13, 2006 16:00 GMT Number Q-315 ______________________________________________________________________________ PROBLEM: A flaw has been found that caused Security Associations to be created with a replay window of 0 when isakmpd was acting as the responder during SA negotiation. PLATFORM: Debian GNU/Linux 3.1 (sarge) isakmpd in OpenBSD 3.8 and 3.9 DAMAGE: This could allow an attacker to re-inject sniffed IPsec packets, which would not be checked against the replay counter. SOLUTION: Apply current patches. ______________________________________________________________________________ VULNERABILITY The risk is LOW. Allows remote attackers to replay IPSec ASSESSMENT: packets and bypass the replay protection. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/q-315.shtml ORIGINAL BULLETIN: http://www.debian.org/security/2006/dsa-1175 CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4436 ______________________________________________________________________________ [***** Start DSA-1175-1 *****] Debian Security Advisory DSA-1175-1 isakmpd -- programming error Date Reported: 13 Sep 2006 Affected Packages: isakmpd Vulnerable: Yes Security database references: In the Debian bugtracking system: Bug 385894. In the Bugtraq database (at SecurityFocus): BugTraq ID 19712. In Mitre's CVE dictionary: CVE-2006-4436. More information: A flaw has been found in isakmpd, OpenBSD's implementation of the Internet Key Exchange protocol, that caused Security Associations to be created with a replay window of 0 when isakmpd was acting as the responder during SA negotiation. This could allow an attacker to re-inject sniffed IPsec packets, which would not be checked against the replay counter. For the stable distribution (sarge) this problem has been fixed in version 20041012-1sarge1 For the unstable distribution (sid) this problem has been fixed in version 20041012-4 We recommend that you upgrade your isakmpd package. Fixed in: Debian GNU/Linux 3.1 (sarge) Source: http://security.debian.org/pool/updates/main/i/isakmpd/isakmpd_20041012-1sarge1.dsc http://security.debian.org/pool/updates/main/i/isakmpd/isakmpd_20041012-1sarge1.diff.gz http://security.debian.org/pool/updates/main/i/isakmpd/isakmpd_20041012.orig.tar.gz Alpha: http://security.debian.org/pool/updates/main/i/isakmpd/isakmpd_20041012-1sarge1_alpha.deb AMD64: http://security.debian.org/pool/updates/main/i/isakmpd/isakmpd_20041012-1sarge1_amd64.deb ARM: http://security.debian.org/pool/updates/main/i/isakmpd/isakmpd_20041012-1sarge1_arm.deb HPPA: http://security.debian.org/pool/updates/main/i/isakmpd/isakmpd_20041012-1sarge1_hppa.deb Intel IA-32: http://security.debian.org/pool/updates/main/i/isakmpd/isakmpd_20041012-1sarge1_i386.deb Intel IA-64: http://security.debian.org/pool/updates/main/i/isakmpd/isakmpd_20041012-1sarge1_ia64.deb Motorola 680x0: http://security.debian.org/pool/updates/main/i/isakmpd/isakmpd_20041012-1sarge1_m68k.deb Big endian MIPS: http://security.debian.org/pool/updates/main/i/isakmpd/isakmpd_20041012-1sarge1_mips.deb Little endian MIPS: http://security.debian.org/pool/updates/main/i/isakmpd/isakmpd_20041012-1sarge1_mipsel.deb PowerPC: http://security.debian.org/pool/updates/main/i/isakmpd/isakmpd_20041012-1sarge1_powerpc.deb IBM S/390: http://security.debian.org/pool/updates/main/i/isakmpd/isakmpd_20041012-1sarge1_s390.deb Sun Sparc: http://security.debian.org/pool/updates/main/i/isakmpd/isakmpd_20041012-1sarge1_sparc.deb MD5 checksums of the listed files are available in the original advisory. [***** End DSA-1175-1 *****] _______________________________________________________________________________ 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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