ISC DHCP: Denial of Service

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200808-05 / dhcp
Release Date	August 06, 2008
Latest Revision	August 06, 2008: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-misc/dhcp	< 3.1.1	>= 3.1.1	All supported architectures

Related bugreports: #227135

Synopsis

A Denial of Service vulnerability was discovered in ISC DHCP.

2. Impact Information

Background

ISC DHCP is ISC's reference implementation of all aspects of the Dynamic Host Configuration Protocol.

Description

A buffer overflow error was found in ISC DHCP server, that can only be exploited under unusual server configurations where the DHCP server is configured to provide clients with a large set of DHCP options.

Impact

A remote attacker could exploit this vulnerability to cause a Denial of Service.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All ISC DHCP users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/dhcp-3.1.1"

4. References

CVE-2007-0062

Page updated August 06, 2008

Summary: This is a Gentoo Linux Security Advisory

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