__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Alsa-Drive Vulnerability [Debian Security Advisory DSA-1505-1] February 25, 2008 22:00 GMT Number S-203 ______________________________________________________________________________ PROBLEM: There is a memory leak in the snd_page_alloc module. PLATFORM: Debian GNU/Linux 3.1 (sarge) and 4.0 (etch) DAMAGE: Kernel memory leak. SOLUTION: Upgrade to the appropriate version. ______________________________________________________________________________ VULNERABILITY The risk is LOW. Local users could exploit this issue to obtain ASSESSMENT: sensitive information from the kernel. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/s-203.shtml ORIGINAL BULLETIN: http://www.debian.org/security/2008/dsa-1505 CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2007-4571 ______________________________________________________________________________ [***** Start Debian Security Advisory DSA-1505-1 *****] Debian Security Advisory DSA-1505-1 alsa-driver -- kernel memory leak Date Reported: 22 Feb 2008 Affected Packages: alsa-driver Vulnerable: Yes Security database references: In Mitre's CVE dictionary: CVE-2007-4571. More information: Takashi Iwai supplied a fix for a memory leak in the snd_page_alloc module. Local users could exploit this issue to obtain sensitive information from the kernel (CVE-2007-4571). For the oldstable distribution (sarge), this problem has been fixed in version 1.0.8-7sarge1. The prebuilt modules provided by alsa-modules-i386 have been rebuilt to take advantage of this update, and are available in version 1.0.8+2sarge2. For the stable distribution (etch), this problem has been fixed in version 1.0.13-5etch1. This issue was already fixed for the version of ALSA provided by linux-2.6 in DSA 1479. For the unstable distributions (sid), this problem was fixed in version 1.0.15-1. We recommend that you upgrade your alsa-driver and alsa-modules-i386 packages. Fixed in: Debian GNU/Linux 3.1 (sarge) Source: http://security.debian.org/pool/updates/main/a/alsa-driver/alsa-driver_1.0.8-7sarge1.dsc http://security.debian.org/pool/updates/main/a/alsa-driver/alsa-driver_1.0.8-7sarge1.diff.gz http://security.debian.org/pool/updates/main/a/alsa-driver/alsa-driver_1.0.8.orig.tar.gz http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-i386_1.0.8+2sarge2.dsc http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-i386_1.0.8+2sarge2.tar.gz Architecture-independent component: http://security.debian.org/pool/updates/main/a/alsa-driver/alsa-headers_1.0.8-7sarge1_all.deb http://security.debian.org/pool/updates/main/a/alsa-driver/alsa-source_1.0.8-7sarge1_all.deb http://security.debian.org/pool/updates/main/a/alsa-driver/alsa-base_1.0.8-7sarge1_all.deb Intel IA-32: http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-2.4.27-4-386_1.0.8+2sarge2_i386.deb http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-2.4.27-4-686_1.0.8+2sarge2_i386.deb http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-2.4-386_1.0.8+2sarge2_i386.deb http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-2.4.27-4-k7-smp_1.0.8+2sarge2_i386.deb http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-2.4-k7-smp_1.0.8+2sarge2_i386.deb http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-2.4.27-4-686-smp_1.0.8+2sarge2_i386.deb http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-2.4-686-smp_1.0.8+2sarge2_i386.deb http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-2.4-686_1.0.8+2sarge2_i386.deb http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-2.4.27-4-k6_1.0.8+2sarge2_i386.deb http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-2.4-k7_1.0.8+2sarge2_i386.deb http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-2.4.27-4-k7_1.0.8+2sarge2_i386.deb http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-2.4.27-4-586tsc_1.0.8+2sarge2_i386.deb http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-2.4-586tsc_1.0.8+2sarge2_i386.deb http://security.debian.org/pool/updates/main/a/alsa-modules-i386/alsa-modules-2.4-k6_1.0.8+2sarge2_i386.deb Debian GNU/Linux 4.0 (etch) Source: http://security.debian.org/pool/updates/main/a/alsa-driver/alsa-driver_1.0.13-5etch1.diff.gz http://security.debian.org/pool/updates/main/a/alsa-driver/alsa-driver_1.0.13.orig.tar.gz http://security.debian.org/pool/updates/main/a/alsa-driver/alsa-driver_1.0.13-5etch1.dsc Architecture-independent component: http://security.debian.org/pool/updates/main/a/alsa-driver/alsa-source_1.0.13-5etch1_all.deb http://security.debian.org/pool/updates/main/a/alsa-driver/alsa-base_1.0.13-5etch1_all.deb http://security.debian.org/pool/updates/main/a/alsa-driver/linux-sound-base_1.0.13-5etch1_all.deb MD5 checksums of the listed files are available in the original advisory. [***** End Debian Security Advisory DSA-1505-1 *****] _______________________________________________________________________________ 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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