GLSA Advocate
Joined: 12 May 2004 Posts: 2663
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Posted: Fri Dec 19, 2008 10:26 pm Post subject: [ GLSA 200812-19 ] PowerDNS: Multiple vulnerabilities |
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Gentoo Linux Security Advisory
Title: PowerDNS: Multiple vulnerabilities (GLSA 200812-19)
Severity: normal
Exploitable: remote
Date: December 19, 2008
Bug(s): #234032, #247079
ID: 200812-19
Synopsis
Two vulnerabilities have been discovered in PowerDNS, possibly leading to a
Denial of Service and easing cache poisoning attacks.
Background
The PowerDNS Nameserver is an authoritative-only nameserver which uses
a flexible backend architecture.
Affected Packages
Package: net-dns/pdns
Vulnerable: < 2.9.21.2
Unaffected: >= 2.9.21.2
Architectures: All supported architectures
Description
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).
Impact
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.
Workaround
There is no known workaround at this time.
Resolution
All PowerDNS users should upgrade to the latest version:
Code: | # emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/pdns-2.9.21.2" |
References
CVE-2008-3337
CVE-2008-5277
Last edited by GLSA on Thu Jul 03, 2014 4:28 am; edited 4 times in total |
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