PowerDNS: Denial of Service vulnerability

1. Gentoo Linux Security Advisory

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-dns/pdns	< 2.9.17	>= 2.9.17	All supported architectures

Related bugreports: #80713

A vulnerability in PowerDNS could lead to a temporary Denial of Service.

2. Impact Information

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

A vulnerability has been reported in the DNSPacket::expand method of dnspacket.cc.

An attacker could cause a temporary Denial of Service by sending a random stream of bytes to the PowerDNS Daemon.

3. Resolution Information

There is no known workaround at this time.

All PowerDNS users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/pdns-2.9.17"

4. References

Updated February 13, 2005

Summary: This is a Gentoo Linux Security Advisory

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