Joined: 12 May 2004
|Posted: Wed Feb 22, 2012 8:26 pm Post subject: [ GLSA 201202-03 ] MaraDNS: Denial of Service
|Gentoo Linux Security Advisory
Title: MaraDNS: Denial of Service (GLSA 201202-03)
Date: February 22, 2012
A hash collision vulnerability in MaraDNS allows remote attackers
to cause a Denial of Service condition.
MaraDNS is a proxy DNS server with permanent caching.
Vulnerable: < 1.4.09
Unaffected: >= 1.4.09
Architectures: All supported architectures
MaraDNS does not properly randomize hash functions to protect against
hash collision attacks.
A remote attacker could send many specially crafted DNS recursive
queries, possibly resulting in a Denial of Service condition.
There is no known workaround at this time.
All MaraDNS users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/maradns-1.4.09"