Debian DSA-1436-1 : linux-2.6 - several vulnerabilities

high Nessus Plugin ID 29756

Synopsis

The remote Debian host is missing a security-related update.

Description

Several local vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or the execution of arbitrary code. The Common Vulnerabilities and Exposures project identifies the following problems :

- CVE-2006-6058 LMH reported an issue in the minix filesystem that allows local users with mount privileges to create a DoS (printk flood) by mounting a specially crafted corrupt filesystem.

- CVE-2007-5966 Warren Togami discovered an issue in the hrtimer subsystem that allows a local user to cause a DoS (soft lockup) by requesting a timer sleep for a long period of time leading to an integer overflow.

- CVE-2007-6063 Venustech AD-LAB discovered a buffer overflow in the isdn ioctl handling, exploitable by a local user.

- CVE-2007-6206 Blake Frantz discovered that when a core file owned by a non-root user exists, and a root-owned process dumps core over it, the core file retains its original ownership. This could be used by a local user to gain access to sensitive information.

- CVE-2007-6417 Hugh Dickins discovered an issue in the tmpfs filesystem where, under a rare circumstance, a kernel page may be improperly cleared, leaking sensitive kernel memory to userspace or resulting in a DoS (crash).

These problems have been fixed in the stable distribution in version 2.6.18.dfsg.1-13etch6.

The following matrix lists additional packages that were rebuilt for compatibility with or to take advantage of this update :

Debian 4.0 (etch) fai-kernels 1.17+etch.13etch6 user-mode-linux 2.6.18-1um-2etch.13etch6

Solution

Upgrade the kernel package immediately and reboot the machine. If you have built a custom kernel from the kernel source package, you will need to rebuild to take advantage of these fixes.

See Also

https://security-tracker.debian.org/tracker/CVE-2006-6058

https://security-tracker.debian.org/tracker/CVE-2007-5966

https://security-tracker.debian.org/tracker/CVE-2007-6063

https://security-tracker.debian.org/tracker/CVE-2007-6206

https://security-tracker.debian.org/tracker/CVE-2007-6417

https://www.debian.org/security/2007/dsa-1436

Plugin Details

Severity: High

ID: 29756

File Name: debian_DSA-1436.nasl

Version: 1.21

Type: local

Agent: unix

Published: 12/24/2007

Updated: 1/4/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:linux-2.6, cpe:/o:debian:debian_linux:4.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Patch Publication Date: 12/20/2007

Reference Information

CVE: CVE-2006-6058, CVE-2007-5966, CVE-2007-6063, CVE-2007-6206, CVE-2007-6417

DSA: 1436

CWE: 16, 119, 189, 200, 399