[ GLSA 200708-06 ] Net::DNS: Multiple vulnerabilities

[GLSA]

Gentoo Linux Security Advisory

Title: Net::DNS: Multiple vulnerabilities (GLSA 200708-06)
Severity: normal
Exploitable: remote
Date: August 11, 2007
Bug(s): #184029
ID: 200708-06

Synopsis


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


Background


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


Affected Packages

Package: dev-perl/Net-DNS
Vulnerable: < 0.60
Unaffected: >= 0.60
Architectures: All supported architectures


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: