__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN yarssr vulnerability [Debian Security Advisory DSA-1477-1] January 29, 2008 21:00 GMT Number S-137 ______________________________________________________________________________ PROBLEM: It was discovered that yarssr, an RSS aggegator and reader, performs insufficient input sanitising, which could result in the execution of arbitrary shell commands if a malformed feed is read. PLATFORM: Debian GNU/Linux 4.0 (stable) DAMAGE: Execution of arbitrary shell commands. SOLUTION: Upgrade to the appropriate version. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. yarssr performs insufficient input ASSESSMENT: sanitising, which could result in the execution of arbitrary shell commands if a malformed feed is read. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/s-137.shtml ORIGINAL BULLETIN: http://www.debian.org/security/2008/dsa-1477 CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2007-5837 ______________________________________________________________________________ [***** Start Debian Security Advisory DSA-1477-1 *****] Debian Security Advisory DSA-1477-1 yarssr -- missing input sanitising Date Reported: 27 Jan 2008 Affected Packages: yarssr Vulnerable: Yes Security database references: In Mitre's CVE dictionary: CVE-2007-5837. More information: Duncan Gilmore discovered that yarssr, an RSS aggregator and reader, performs insufficient input sanitising, which could result in the execution of arbitrary shell commands if a malformed feed is read. Due to a technical limitation of the archive management scripts, the fix for the old stable distribution (sarge) needs to be postponed by a few days. For the stable distribution (etch), this problem has been fixed in version 0.2.2-1etch1. We recommend that you upgrade your yarssr packages. Fixed in: Debian GNU/Linux 4.0 (stable) Source: http://security.debian.org/pool/updates/main/y/yarssr/yarssr_0.2.2-1etch1.diff.gz http://security.debian.org/pool/updates/main/y/yarssr/yarssr_0.2.2.orig.tar.gz http://security.debian.org/pool/updates/main/y/yarssr/yarssr_0.2.2-1etch1.dsc Architecture-independent component: http://security.debian.org/pool/updates/main/y/yarssr/yarssr_0.2.2-1etch1_all.deb MD5 checksums of the listed files are available in the original advisory. [***** End Debian Security Advisory DSA-1477-1 *****] _______________________________________________________________________________ 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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