Ubuntu 4.10 / 5.04 : util-linux vulnerability (USN-184-1)

high Nessus Plugin ID 20595

Synopsis

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

Description

David Watson discovered that 'umount -r' removed some restrictive mount options like the 'nosuid' flag. If /etc/fstab contains user-mountable removable devices which specify the 'nosuid' flag (which is common practice for such devices), a local attacker could exploit this to execute arbitrary programs with root privileges by calling 'umount -r' on a removable device.

This does not affect the default Ubuntu configuration. Since Ubuntu mounts removable devices automatically, there is normally no need to configure them manually in /etc/fstab.

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: 20595

File Name: ubuntu_USN-184-1.nasl

Version: 1.16

Type: local

Agent: unix

Published: 1/15/2006

Updated: 1/19/2021

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, 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:canonical:ubuntu_linux:bsdutils, p-cpe:/a:canonical:ubuntu_linux:mount, p-cpe:/a:canonical:ubuntu_linux:util-linux, p-cpe:/a:canonical:ubuntu_linux:util-linux-locales, cpe:/o:canonical:ubuntu_linux:4.10, cpe:/o:canonical:ubuntu_linux:5.04

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

Patch Publication Date: 9/19/2005

Vulnerability Publication Date: 9/12/2005

Reference Information

CVE: CVE-2005-2876

USN: 184-1