A hash collision vulnerability in MaraDNS allows remote attackers to cause a Denial of Service condition.
|Package||net-dns/maradns on all architectures|
|Affected versions||< 1.4.09|
|Unaffected versions||>= 1.4.09|
MaraDNS is a proxy DNS server with permanent caching.
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"
February 22, 2012
February 22, 2012: 1