__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN GNU Tar Vulnerabilities [Debian Security Advisory DSA-1438-1] January 3, 2008 22:00 GMT Number S-100 [REVISED 7 May 2008] ______________________________________________________________________________ PROBLEM: Several vulnerabilities have been discovered in GNU Tar. PLATFORM: Debian GNU/Linux 3.1 (oldstable) and 4.0 (etch) DAMAGE: May lead to arbitrary code execution when processing maliciously crafted archives. SOLUTION: Upgrade to the appropriate version. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. May lead to arbitrary code execution when ASSESSMENT: processing maliciously crafted archives. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/s-100.shtml ORIGINAL BULLETIN: http://www.debian.org/security/2007/dsa-1438 ADDITIONAL LINK: http://www.debian.org/security/2007/dsa-1566 CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2007-4131 CVE-2007-4476 ______________________________________________________________________________ REVISION HISTORY: 05/07/2008 - revised S-100 to add a link to Debian Security Advisory DSA-1566-1 for Debian GNU/Linux 4.0 (etch). [***** Start Debian Security Advisory DSA-1438-1 *****] Debian Security Advisory DSA-1438-1 tar -- several vulnerabilities Date Reported: 28 Dec 2007 Affected Packages: tar Vulnerable: Yes Security database references: In Mitre's CVE dictionary: CVE-2007-4131, CVE-2007-4476. More information: Several vulnerabilities have been discovered in GNU Tar. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2007-4131 A directory traversal vulnerability enables attackers using specially crafted archives to extract contents outside the directory tree created by tar. CVE-2007-4476 A stack-based buffer overflow in the file name checking code may lead to arbitrary code execution when processing maliciously crafted archives. For the old stable distribution (sarge), these problems have been fixed in version 1.14-2.4. For the stable distribution (etch), these problems have been fixed in version 1.16-2etch1. For the unstable distribution (sid), these problems have been fixed in version 1.18-2. We recommend that you upgrade your tar package. Fixed in: Debian GNU/Linux 3.1 (oldstable) Source: http://security.debian.org/pool/updates/main/t/tar/tar_1.14.orig.tar.gz http://security.debian.org/pool/updates/main/t/tar/tar_1.14-2.4.dsc http://security.debian.org/pool/updates/main/t/tar/tar_1.14-2.4.diff.gz Alpha: http://security.debian.org/pool/updates/main/t/tar/tar_1.14-2.4_alpha.deb AMD64: http://security.debian.org/pool/updates/main/t/tar/tar_1.14-2.4_amd64.deb ARM: http://security.debian.org/pool/updates/main/t/tar/tar_1.14-2.4_arm.deb HP Precision: http://security.debian.org/pool/updates/main/t/tar/tar_1.14-2.4_hppa.deb Intel IA-32: http://security.debian.org/pool/updates/main/t/tar/tar_1.14-2.4_i386.deb Intel IA-64: http://security.debian.org/pool/updates/main/t/tar/tar_1.14-2.4_ia64.deb Motorola 680x0: http://security.debian.org/pool/updates/main/t/tar/tar_1.14-2.4_m68k.deb Big-endian MIPS: http://security.debian.org/pool/updates/main/t/tar/tar_1.14-2.4_mips.deb Little-endian MIPS: http://security.debian.org/pool/updates/main/t/tar/tar_1.14-2.4_mipsel.deb PowerPC: http://security.debian.org/pool/updates/main/t/tar/tar_1.14-2.4_powerpc.deb IBM S/390: http://security.debian.org/pool/updates/main/t/tar/tar_1.14-2.4_s390.deb Sun Sparc: http://security.debian.org/pool/updates/main/t/tar/tar_1.14-2.4_sparc.deb Debian GNU/Linux 4.0 (stable) Source: http://security.debian.org/pool/updates/main/t/tar/tar_1.16-2etch1.diff.gz http://security.debian.org/pool/updates/main/t/tar/tar_1.16.orig.tar.gz http://security.debian.org/pool/updates/main/t/tar/tar_1.16-2etch1.dsc Alpha: http://security.debian.org/pool/updates/main/t/tar/tar_1.16-2etch1_alpha.deb AMD64: http://security.debian.org/pool/updates/main/t/tar/tar_1.16-2etch1_amd64.deb ARM: http://security.debian.org/pool/updates/main/t/tar/tar_1.16-2etch1_arm.deb HP Precision: http://security.debian.org/pool/updates/main/t/tar/tar_1.16-2etch1_hppa.deb Intel IA-32: http://security.debian.org/pool/updates/main/t/tar/tar_1.16-2etch1_i386.deb Intel IA-64: http://security.debian.org/pool/updates/main/t/tar/tar_1.16-2etch1_ia64.deb Big-endian MIPS: http://security.debian.org/pool/updates/main/t/tar/tar_1.16-2etch1_mips.deb Little-endian MIPS: http://security.debian.org/pool/updates/main/t/tar/tar_1.16-2etch1_mipsel.deb PowerPC: http://security.debian.org/pool/updates/main/t/tar/tar_1.16-2etch1_powerpc.deb IBM S/390: http://security.debian.org/pool/updates/main/t/tar/tar_1.16-2etch1_s390.deb Sun Sparc: http://security.debian.org/pool/updates/main/t/tar/tar_1.16-2etch1_sparc.deb MD5 checksums of the listed files are available in the original advisory. [***** End Debian Security Advisory DSA-1438-1 *****] _______________________________________________________________________________ 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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