MaraDNS is prone to a Denial of Service vulnerability impacting CNAME resolution.
Package | net-dns/maradns on all architectures |
---|---|
Affected versions | < 1.2.12.08 |
Unaffected versions | >= 1.2.12.08 |
MaraDNS is a package that implements the Domain Name Service (DNS) with resolver and caching ability.
Michael Krieger reported that a specially crafted DNS could prevent an authoritative canonical name (CNAME) record from being resolved because of an "improper rotation of resource records".
A remote attacker could send specially crafted DNS packets to a vulnerable server, making it unable to resolve CNAME records.
Add "max_ar_chain = 2" to the "marac" configuration file.
All MaraDNS users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/maradns-1.2.12.09"
Release date
January 29, 2008
Latest revision
January 29, 2008: 01
Severity
normal
Exploitable
remote
Bugzilla entries