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Gentoo Linux Security Advisory GLSA 200812-19 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: PowerDNS: Multiple vulnerabilities |
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Date: December 19, 2008 |
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Bugs: #234032, #247079 |
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ID: 200812-19 |
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Synopsis |
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======== |
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|
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Two vulnerabilities have been discovered in PowerDNS, possibly leading |
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to a Denial of Service and easing cache poisoning attacks. |
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Background |
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========== |
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|
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The PowerDNS Nameserver is an authoritative-only nameserver which uses |
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a flexible backend architecture. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 net-dns/pdns < 2.9.21.2 >= 2.9.21.2 |
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|
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Description |
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=========== |
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|
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Daniel Drown reported an error when receiving a HINFO CH query |
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(CVE-2008-5277). Brian J. Dowling of Simplicity Communications |
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discovered a previously unknown security implication of the PowerDNS |
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behavior to not respond to certain queries it considers malformed |
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(CVE-2008-3337). |
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|
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Impact |
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====== |
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|
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A remote attacker could send specially crafted queries to cause a |
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Denial of Service. The second vulnerability in itself does not pose a |
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security risk to PowerDNS Nameserver. However, not answering a query |
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for an invalid DNS record within a valid domain allows for a larger |
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spoofing window on third-party nameservers for domains being hosted by |
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PowerDNS Nameserver itself. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All PowerDNS users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-dns/pdns-2.9.21.2" |
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References |
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========== |
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[ 1 ] CVE-2008-3337 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3337 |
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[ 2 ] CVE-2008-5277 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5277 |
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200812-19.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2008 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.5 |
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