GLSA 200812-19: PowerDNS: Multiple vulnerabilities

Title:PowerDNS: Multiple vulnerabilities
Bugs: #234032, #247079


Two vulnerabilities have been discovered in PowerDNS, possibly leading to a Denial of Service and easing cache poisoning attacks.


The PowerDNS Nameserver is an authoritative-only nameserver which uses a flexible backend architecture.

Affected packages

Package Vulnerable Unaffected Architecture(s)
net-dns/pdns < >= All supported architectures


Daniel Drown reported an error when receiving a HINFO CH query (CVE-2008-5277). Brian J. Dowling of Simplicity Communications discovered a previously unknown security implication of the PowerDNS behavior to not respond to certain queries it considers malformed (CVE-2008-3337).


A remote attacker could send specially crafted queries to cause a Denial of Service. The second vulnerability in itself does not pose a security risk to PowerDNS Nameserver. However, not answering a query for an invalid DNS record within a valid domain allows for a larger spoofing window on third-party nameservers for domains being hosted by PowerDNS Nameserver itself.


There is no known workaround at this time.


All PowerDNS users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-dns/pdns-"



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