Net::DNS: Multiple vulnerabilities — GLSA 200708-06

Multiple vulnerabilities have been discovered in the Net::DNS Perl module, allowing for a Denial of Service and a cache poisoning attack.

Affected Packages

dev-perl/Net-DNS on all architectures
Affected versions < 0.60
Unaffected versions >= 0.60

Background

Net::DNS is a Perl implementation of a DNS resolver.

Description

hjp discovered an error when handling DNS query IDs which make them partially predictable. Steffen Ullrich discovered an error in the dn_expand() function which could lead to an endless loop.

Impact

A remote attacker could send a specially crafted DNS request to the server which could result in a Denial of Service with an infinite recursion, or perform a cache poisoning attack.

Workaround

There is no known workaround at this time.

Resolution

All Net::DNS users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=dev-perl/Net-DNS-0.60"

References

Release Date
August 11, 2007

Latest Revision
August 11, 2007: 01

Severity
normal

Exploitable
remote

Bugzilla entries