ISC DHCP: Multiple vulnerabilities — GLSA 201804-05

Multiple vulnerabilities have been found in ISC DHCP, the worst of which could allow for the remote execution of arbitrary code.

Affected packages

net-misc/dhcp on all architectures
Affected versions < 4.3.6_p1
Unaffected versions >= 4.3.6_p1

Background

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

Description

Multiple vulnerabilities have been discovered in ISC DHCP. Please review the CVE identifiers referenced below for details.

Impact

Remote attackers could execute arbitrary code, cause a Denial of Service condition, or have other unspecified impacts.

Workaround

There are no known workarounds at this time for CVE-2018-5732 or CVE-2018-5733.

In accordance with upstream documentation, the recommended workaround for CVE-2017-3144 is, “to disallow access to the OMAPI control port from unauthorized clients (in accordance with best practices for server operation).”

Resolution

All DHCP users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-misc/dhcp-4.3.6_p1"
 

References

Release date
April 08, 2018

Latest revision
April 08, 2018: 1

Severity
normal

Exploitable
remote

Bugzilla entries