Test ID:	1.3.6.1.4.1.25623.1.0.58322
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DSA-1271-1)
Summary:	The remote host is missing an update for the Debian 'openafs' package(s) announced via the DSA-1271-1 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'openafs' package(s) announced via the DSA-1271-1 advisory. Vulnerability Insight: A design error has been identified in the OpenAFS, a cross-platform distributed filesystem included with Debian. OpenAFS historically has enabled setuid filesystem support for the local cell. However, with its existing protocol, OpenAFS can only use encryption, and therefore integrity protection, if the user is authenticated. Unauthenticated access doesn't do integrity protection. The practical result is that it's possible for an attacker with knowledge of AFS to forge an AFS FetchStatus call and make an arbitrary binary file appear to an AFS client host to be setuid. If they can then arrange for that binary to be executed, they will be able to achieve privilege escalation. OpenAFS 1.3.81-3sarge2 changes the default behavior to disable setuid files globally, including the local cell. It is important to note that this change will not take effect until the AFS kernel module, built from the openafs-modules-source package, is rebuilt and loaded into your kernel. As a temporary workaround until the kernel module can be reloaded, setuid support can be manually disabled for the local cell by running the following command as root fs setcell -cell -nosuid Following the application of this update, if you are certain there is no security risk of an attacker forging AFS fileserver responses, you can re-enable setuid status selectively with the following command, however this should not be done on sites that are visible to the Internet fs setcell -cell -suid For the stable distribution (sarge), this problem has been fixed in version 1.3.81-3sarge2. For the unstable distribution (sid) and the upcoming stable distribution (etch), this problem will be fixed in version 1.4.2-6. We recommend that you upgrade your openafs package. Affected Software/OS: 'openafs' package(s) on Debian 3.1. Solution: Please install the updated package(s). CVSS Score: 7.5 CVSS Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2007-1507 BugTraq ID: 23060 http://www.securityfocus.com/bid/23060 Debian Security Information: DSA-1271 (Google Search) http://www.debian.org/security/2007/dsa-1271 http://security.gentoo.org/glsa/glsa-200704-03.xml http://www.mandriva.com/security/advisories?name=MDKSA-2007:066 http://www.openafs.org/pipermail/openafs-announce/2007/000185.html http://www.openafs.org/pipermail/openafs-announce/2007/000186.html http://www.openafs.org/pipermail/openafs-announce/2007/000187.html http://www.securitytracker.com/id?1017807 http://secunia.com/advisories/24582 http://secunia.com/advisories/24599 http://secunia.com/advisories/24607 http://secunia.com/advisories/24720 http://www.vupen.com/english/advisories/2007/1033 XForce ISS Database: openafs-setuid-privilege-escalation(33180) https://exchange.xforce.ibmcloud.com/vulnerabilities/33180
Copyright	Copyright (C) 2008 Greenbone AG

This is only one of 145615 vulnerability tests in our test suite. Find out more about running a complete security audit. To run a free test of this vulnerability against your system, register below.