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Debian DSA-1809-1 : linux-2.6 - denial of service, privilege escalation
high Nessus Plugin ID 38990
Synopsis
The remote Debian host is missing a security-related update.Description
Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service, or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems :- CVE-2009-1630 Frank Filz discovered that local users may be able to execute files without execute permission when accessed via an nfs4 mount.
- CVE-2009-1633 Jeff Layton and Suresh Jayaraman fixed several buffer overflows in the CIFS filesystem which allow remote servers to cause memory corruption.
- CVE-2009-1758 Jan Beulich discovered an issue in Xen where local guest users may cause a denial of service (oops).
This update also fixes a regression introduced by the fix for CVE-2009-1184 in 2.6.26-15lenny3. This prevents a boot time panic on systems with SELinux enabled.
Solution
Upgrade the linux-2.6 and user-mode-linux packages.For the oldstable distribution (etch), these problems, where applicable, will be fixed in future updates to linux-2.6 and linux-2.6.24.
For the stable distribution (lenny), these problems have been fixed in version 2.6.26-15lenny3.
Note: Debian carefully tracks all known security issues across every linux kernel package in all releases under active security support.
However, given the high frequency at which low-severity security issues are discovered in the kernel and the resource requirements of doing an update, updates for lower priority issues will normally not be released for all kernels at the same time. Rather, they will be released in a staggered or 'leap-frog' fashion.
See Also
https://security-tracker.debian.org/tracker/CVE-2009-1630
https://security-tracker.debian.org/tracker/CVE-2009-1633
https://security-tracker.debian.org/tracker/CVE-2009-1758
Plugin Details
Severity: High
ID: 38990
File Name: debian_DSA-1809.nasl
Version: 1.14
Type: local
Agent: unix
Family: Debian Local Security Checks
Published: 6/3/2009
Updated: 1/4/2021
Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 7.1
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C
Vulnerability Information
CPE: p-cpe:/a:debian:debian_linux:linux-2.6, cpe:/o:debian:debian_linux:5.0
Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l
Patch Publication Date: 6/1/2009