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Ubuntu 11.04 / 11.10 : isc-dhcp vulnerability (USN-1309-1)

medium Nessus Plugin ID 57321

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Synopsis

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

Description

It was discovered that the DHCP server incorrectly handled certain malformed packets when configured to evaluate regular expressions. A remote attacker could use this issue to cause DHCP to crash, resulting in a denial of service.

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 isc-dhcp-server package.

See Also

https://usn.ubuntu.com/1309-1/

Plugin Details

Severity: Medium

ID: 57321

File Name: ubuntu_USN-1309-1.nasl

Version: 1.9

Type: local

Agent: unix

Published: 12/16/2011

Updated: 9/19/2019

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:11.04, p-cpe:/a:canonical:ubuntu_linux:isc-dhcp-server, cpe:/o:canonical:ubuntu_linux:11.10

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

Patch Publication Date: 12/15/2011

Vulnerability Publication Date: 12/8/2011

Reference Information

CVE: CVE-2011-4539

USN: 1309-1