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Ubuntu 9.10 / 10.04 LTS / 10.10 : dhcp3 vulnerability (USN-1108-2)

high Nessus Plugin ID 55067

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Synopsis

The remote Ubuntu host is missing a security-related patch.

Description

USN-1108-1 fixed vulnerabilities in DHCP. Due to an error, the patch to fix the vulnerability was not properly applied on Ubuntu 9.10 and higher. This update fixes the problem.

Sebastian Krahmer discovered that the dhclient utility incorrectly filtered crafted responses. An attacker could use this flaw with a malicious DHCP server to execute arbitrary code, resulting in root privilege escalation.

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 dhcp3-client package.

See Also

https://usn.ubuntu.com/1108-2/

Plugin Details

Severity: High

ID: 55067

File Name: ubuntu_USN-1108-2.nasl

Version: 1.11

Type: local

Agent: unix

Published: 6/13/2011

Updated: 9/19/2019

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: 5.1

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:10.10, p-cpe:/a:canonical:ubuntu_linux:dhcp3-client, cpe:/o:canonical:ubuntu_linux:10.04:-:lts, cpe:/o:canonical:ubuntu_linux:9.10

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/19/2011

Vulnerability Publication Date: 4/8/2011

Exploitable With

CANVAS (CANVAS)

Reference Information

CVE: CVE-2011-0997

BID: 47176

USN: 1108-2