ISC DHCP: Denial of Service — GLSA 201401-05

A memory exhaustion vulnerability in ISC DHCP could lead to Denial of Service.

Affected Packages

net-misc/dhcp on all architectures
Affected versions < 4.2.5_p1
Unaffected versions >= 4.2.5_p1

Background

ISC DHCP is a Dynamic Host Configuration Protocol (DHCP) client/server.

Description

ISC DHCP is vulnerable to a memory exhaustion attack involving regular expressions sent by DHCP clients.

Impact

A remote attacker could send a specially crafted request from a malicious or spoofed client, potentially leading to a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All ISC DHCP users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-misc/dhcp-4.2.5_p1"
 

References

Release Date
January 06, 2014

Latest Revision
January 06, 2014: 1

Severity
normal

Exploitable
remote

Bugzilla entries