1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200708-06 / net-dns |
| Release Date | August 11, 2007 |
| Latest Revision | August 11, 2007: 01 |
| Impact | normal |
| Exploitable | remote |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| dev-perl/Net-DNS | < 0.60 | >= 0.60 | All supported architectures |
Related bugreports: #184029
Multiple vulnerabilities have been discovered in the Net::DNS Perl module, allowing for a Denial of Service and a cache poisoning attack.
Net::DNS is a Perl implementation of a DNS resolver.
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.
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.
There is no known workaround at this time.
All Net::DNS users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=dev-perl/Net-DNS-0.60" |