dhcpcd: Denial of Service vulnerability — GLSA 200507-16

A vulnerability in dhcpcd may cause the dhcpcd daemon to crash.

Affected Packages

net-misc/dhcpcd on all architectures
Affected versions < 1.3.22_p4-r11
Unaffected versions >= 1.3.22_p4-r11

Background

dhcpcd is a standards compliant DHCP client daemon. It requests an IP address and other information from the DHCP server, automatically configures the network interface, and tries to renew the lease time.

Description

infamous42md discovered that dhcpcd can be tricked to read past the end of the supplied DHCP buffer. As a result, this might lead to a crash of the daemon.

Impact

With a malicious DHCP server an attacker could cause a Denial of Service by crashing the DHCP client.

Workaround

There is no known workaround at this time.

Resolution

All dhcpcd users should upgrade to the latest available version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-misc/dhcpcd-1.3.22_p4-r11"

References

Release Date
July 15, 2005

Latest Revision
July 15, 2005: 01

Severity
normal

Exploitable
remote

Bugzilla entries