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FreeBSD : isc-dhcp-server -- Remote DoS (93be487e-211f-11e1-89b4-001ec9578670)

medium Nessus Plugin ID 57045

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

ISC reports :

A bug exists which allows an attacker who is able to send DHCP Request packets, either directly or through a relay, to remotely crash an ISC DHCP server if that server is configured to evaluate expressions using a regular expression (i.e. uses the '~=' or '~~' comparison operators).

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?0295f6c5

Plugin Details

Severity: Medium

ID: 57045

File Name: freebsd_pkg_93be487e211f11e189b4001ec9578670.nasl

Version: 1.9

Type: local

Published: 12/8/2011

Updated: 1/6/2021

Supported Sensors: 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: p-cpe:/a:freebsd:freebsd:isc-dhcp41-server, p-cpe:/a:freebsd:freebsd:isc-dhcp42-server, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 12/7/2011

Vulnerability Publication Date: 12/7/2011

Reference Information

CVE: CVE-2011-4539