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Ubuntu 4.10 : linux-source-2.6.8.1 vulnerabilities (USN-110-1)

high Nessus Plugin ID 20497

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

Alexander Nyberg discovered an integer overflow in the sysfs_write_file() function. A local attacker could exploit this to crash the kernel or possibly even execute arbitrary code with root privileges by writing to an user-writable file in /sys under certain low-memory conditions. However, there are very few cases where a user-writeable sysfs file actually exists. (CAN-2005-0867)

Olof Johansson discovered a Denial of Service vulnerability in the futex functions, which provide semaphores for exclusive locking of resources. A local attacker could possibly exploit this to cause a kernel deadlock. (CAN-2005-0937)

In addition this update fixes two race conditions in the ext3 and jfs file system drivers, which could lead to a kernel crash under certain (unusual) conditions. However, these cannot easily be triggered by users, thus they are not security sensitive.
(http://linux.bkbits.net:8080/linux-2.5/gnupatch@4248d87aETPJX79hVXl4o wAUwu2SmQ, http://linux.bkbits.net:8080/linux-2.6/[email protected])

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 20497

File Name: ubuntu_USN-110-1.nasl

Version: 1.14

Type: local

Agent: unix

Published: 1/15/2006

Updated: 1/19/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6.8.1-5-amd64-generic, p-cpe:/a:canonical:ubuntu_linux:linux-headers-2.6.8.1-5-386, p-cpe:/a:canonical:ubuntu_linux:linux-headers-2.6.8.1-5, p-cpe:/a:canonical:ubuntu_linux:linux-patch-debian-2.6.8.1, cpe:/o:canonical:ubuntu_linux:4.10, p-cpe:/a:canonical:ubuntu_linux:linux-headers-2.6.8.1-5-amd64-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6.8.1-5-amd64-k8-smp, p-cpe:/a:canonical:ubuntu_linux:linux-headers-2.6.8.1-5-amd64-k8-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6.8.1-5-amd64-k8, p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6.8.1-5-686-smp, p-cpe:/a:canonical:ubuntu_linux:linux-doc-2.6.8.1, p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6.8.1-5-386, p-cpe:/a:canonical:ubuntu_linux:linux-tree-2.6.8.1, p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6.8.1-5-686, p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6.8.1-5-amd64-xeon, p-cpe:/a:canonical:ubuntu_linux:linux-headers-2.6.8.1-5-amd64-xeon, p-cpe:/a:canonical:ubuntu_linux:linux-headers-2.6.8.1-5-amd64-k8, p-cpe:/a:canonical:ubuntu_linux:linux-headers-2.6.8.1-5-686-smp, p-cpe:/a:canonical:ubuntu_linux:linux-source-2.6.8.1, p-cpe:/a:canonical:ubuntu_linux:linux-headers-2.6.8.1-5-686

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

Patch Publication Date: 4/11/2005

Reference Information

CVE: CVE-2005-0867, CVE-2005-0937

USN: 110-1