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FreeBSD : maradns -- denial of service when resolving a long DNS hostname (8015600f-2c80-11e0-9cc1-00163e5bf4f9)

high Nessus Plugin ID 51832

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Synopsis

The remote FreeBSD host is missing a security-related update.

Description

MaraDNS developer Sam Trenholme reports :

... a mistake in allocating an array of integers, allocating it in bytes instead of sizeof(int) units. This resulted in a buffer being too small, allowing it to be overwritten. The impact of this programming error is that MaraDNS can be crashed by sending MaraDNS a single 'packet of death'. Since the data placed in the overwritten array cannot be remotely controlled (it is a list of increasing integers), there is no way to increase privileges exploiting this bug.

Solution

Update the affected package.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834

http://www.nessus.org/u?fa8493f1

Plugin Details

Severity: High

ID: 51832

File Name: freebsd_pkg_8015600f2c8011e09cc100163e5bf4f9.nasl

Version: 1.10

Type: local

Published: 2/1/2011

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

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: p-cpe:/a:freebsd:freebsd:maradns, cpe:/o:freebsd:freebsd

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/31/2011

Vulnerability Publication Date: 1/23/2011

Reference Information

CVE: CVE-2011-0520

BID: 45966