__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Afuse Vulnerability [Debian Security Advisory DSA-1611-1] August 20, 2008 16:00 GMT Number S-370 ______________________________________________________________________________ PROBLEM: It was discovered that afuse, an automounting file system in user-space, did not properly escape meta characters in paths. This allowed a local attacker with read access to the file system to execute commands as the owner of the file system. PLATFORM: Debian GNU/Linux 4.0 (etch) DAMAGE: Privilege escalation. SOLUTION: Upgrade to the appropriate version. ______________________________________________________________________________ VULNERABILITY The risk is LOW. This allows a local attacker with read access ASSESSMENT: to the file system to execute commands as the owner of the file system. ______________________________________________________________________________ CVSS 2 BASE SCORE: 4.3 TEMPORAL SCORE: 3.6 VECTOR: (AV:L/AC:L/Au:S/C:P/I:P/A:P/E:F/RL:OF/RC:C) ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/s-370.shtml ORIGINAL BULLETIN: http://www.debian.org/security/2008/dsa-1611 CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2008-2232 ______________________________________________________________________________ [***** Start Debian Security Advisory DSA-1611-1 *****] Debian Security Advisory DSA-1611-1 afuse -- privilege escalation Date Reported: 16 Jul 2008 Affected Packages: afuse Vulnerable: Yes Security database references: In the Debian bugtracking system: Bug 490921. In Mitre's CVE dictionary: CVE-2008-2232. More information: Anders Kaseorg discovered that afuse, an automounting file system in user-space, did not properly escape meta characters in paths. This allowed a local attacker with read access to the filesystem to execute commands as the owner of the filesystem. For the stable distribution (etch), this problem has been fixed in version 0.1.1-1+etch1. For the unstable distribution (sid), this problem has been fixed in version 0.2-3. We recommend that you upgrade your afuse (0.1.1-1+etch1) package. Fixed in: Debian GNU/Linux 4.0 (etch) Source: http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1.diff.gz http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1.dsc http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1.orig.tar.gz Alpha: http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_alpha.deb AMD64: http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_amd64.deb ARM: http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_arm.deb HP Precision: http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_hppa.deb Intel IA-32: http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_i386.deb Intel IA-64: http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_ia64.deb Big-endian MIPS: http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_mips.deb Little-endian MIPS: http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_mipsel.deb PowerPC: http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_powerpc.deb IBM S/390: http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_s390.deb Sun Sparc: http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_sparc.deb MD5 checksums of the listed files are available in the original advisory. [***** End Debian Security Advisory DSA-1611-1 *****] _______________________________________________________________________________ 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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