Test ID:	1.3.6.1.4.1.25623.1.0.50706
Category:	Mandrake Local Security Checks
Title:	Mandrake Security Advisory MDKSA-2003:038-1 (kernel)
Summary:	NOSUMMARY
Description:	Description: The remote host is missing an update to kernel announced via advisory MDKSA-2003:038-1. A bug in the kernel module loader code could allow a local user to gain root privileges. This is done by a local user using ptrace and attaching to a modprobe process that is spawned if the user triggers the loading of a kernel module. A temporary workaround can be used to defend against this flaw. It is possible to temporarily disable the kmod kernel module loading subsystem in the kernel after all of the required kernel modules have been loaded. Be sure that you do not need to load additional kernel modules after implementing this workaround. To use it, as root execute: echo /no/such/file >/proc/sys/kernel/modprobe To automate this, you may wish to add it as the last line of the /etc/rc.d/rc.local file. You can revert this change by replacing the content /sbin/modprobe in the /proc/sys/kernel/modprobe file. The root user can still manually load kernel modules with this workaround in place. This update applies a patch to correct the problem. All users should upgrade. Please note that the Mandrake Linux 9.1 kernel already has this patch, and an updated kernel for Mandrake Linux 8.2 will be available shortly. For instructions on how to upgrade your kernel in Mandrake Linux, please refer to: http://www.mandrakesecure.net/en/kernelupdate.php Update: Kernels are now available for Mandrake Linux 8.2, 8.2/PPC, and Multi- Network Firewall 8.2. As well, the previously noted instructions for temporarily working around the vulnerability are not completely accurate as they only defend against a certain type of attack making use of this problem. Users should upgrade to the update kernels, however if you are unable to upgrade you may wish to look into the self-compiled no-ptrace-module.c[1] that is loaded into a running kernel. Affected versions: 8.2, Multi Network Firewall 8.2 Solution: To upgrade automatically use MandrakeUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you. http://www.securityspace.com/smysecure/catid.html?in=MDKSA-2003:038-1 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2003-0127 http://www.securiteam.com/tools/5SP082K5GK.html Risk factor : High CVSS Score: 7.2
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2003-0127 Caldera Security Advisory: CSSA-2003-020.0 ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2003-020.0.txt CERT/CC vulnerability note: VU#628849 http://www.kb.cert.org/vuls/id/628849 Debian Security Information: DSA-270 (Google Search) http://www.debian.org/security/2003/dsa-270 Debian Security Information: DSA-276 (Google Search) http://www.debian.org/security/2003/dsa-276 Debian Security Information: DSA-311 (Google Search) http://www.debian.org/security/2003/dsa-311 Debian Security Information: DSA-312 (Google Search) http://www.debian.org/security/2003/dsa-312 Debian Security Information: DSA-332 (Google Search) http://www.debian.org/security/2003/dsa-332 Debian Security Information: DSA-336 (Google Search) http://www.debian.org/security/2003/dsa-336 Debian Security Information: DSA-423 (Google Search) http://www.debian.org/security/2004/dsa-423 Debian Security Information: DSA-495 (Google Search) http://www.debian.org/security/2004/dsa-495 En Garde Linux Advisory: ESA-20030318-009 En Garde Linux Advisory: ESA-20030515-017 http://marc.info/?l=bugtraq&m=105301461726555&w=2 http://security.gentoo.org/glsa/glsa-200303-17.xml http://www.mandriva.com/security/advisories?name=MDKSA-2003:038 http://www.mandriva.com/security/advisories?name=MDKSA-2003:039 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A254 RedHat Security Advisories: RHSA-2003:088 http://rhn.redhat.com/errata/RHSA-2003-088.html RedHat Security Advisories: RHSA-2003:098 http://rhn.redhat.com/errata/RHSA-2003-098.html http://www.redhat.com/support/errata/RHSA-2003-103.html http://www.redhat.com/support/errata/RHSA-2003-145.html SuSE Security Announcement: SuSE-SA:2003:021 (Google Search) http://archives.neohapsis.com/archives/vulnwatch/2003-q1/0134.html
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