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FreeBSD : isc-dhcp-client -- dhclient does not strip or escape shell meta-characters (7e69f00d-632a-11e0-9f3a-001d092480a4)

high Nessus Plugin ID 53346

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Synopsis

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

Description

ISC reports :

ISC dhclient did not strip or escape certain shell meta-characters in responses from the dhcp server (like hostname) before passing the responses on to dhclient-script. Depending on the script and OS, this can result in execution of exploit code on the client.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?8b349302

Plugin Details

Severity: High

ID: 53346

File Name: freebsd_pkg_7e69f00d632a11e09f3a001d092480a4.nasl

Version: 1.10

Type: local

Published: 4/11/2011

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:isc-dhcp31-client, p-cpe:/a:freebsd:freebsd:isc-dhcp41-client, cpe:/o:freebsd:freebsd

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/10/2011

Vulnerability Publication Date: 4/5/2011

Exploitable With

CANVAS (CANVAS)

Reference Information

CVE: CVE-2011-0997

CERT: 107886