Denial of Service in PowerDNS
ID: | 201202-04 |
Distribution: | Gentoo |
Plattformen: | Keine Angabe |
Datum: | Do, 23. Februar 2012, 10:49 |
Referenzen: | http://doc.powerdns.com/powerdns-advisory-2012-01.html
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-0206 |
Applikationen: | PowerDNS Authoritative Server |
Originalnachricht |
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigC3797587F8402752E7F7E6BC Content-Type: text/plain; charset=ISO-8859- Content-Transfer-Encoding: quoted-printable - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201202-04 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: PowerDNS: Denial of Service Date: February 22, 2012 Bugs: #398403 ID: 201202-04 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A vulnerability in PowerDNS could allow a remote attacker to create a Denial of Service condition. Background ========== The PowerDNS nameserver is an authoritative-only nameserver which uses a flexible backend architecture. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-dns/pdns < 3.0.1 >= 3.0.1 Description =========== A vulnerability has been found in PowerDNS which could cause a packet loop of DNS responses. Impact ====== A remote attacker could send specially crafted DNS response packets, possibly resulting in a Denial of Service condition. Workaround ========== PowerDNS users can set "cache-ttl=0" in /etc/powerdns/pdns.conf and then restart the PowerDNS daemon: # /etc/init.d/pdns restart Please review the PowerDNS Security Advisory below for more workaround details. Resolution ========== All PowerDNS users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/pdns-3.0.1" References ========== [ 1 ] CVE-2012-0206 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0206 [ 2 ] PowerDNS Security Advisory 2012-01 http://doc.powerdns.com/powerdns-advisory-2012-01.html Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201202-04.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2012 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5 --------------enigC3797587F8402752E7F7E6BC Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iF4EAREIAAYFAk9FTg4ACgkQAnl3SfnYR/jKAQD+Kk6mRPuDHnxKjSeW2Tylro+J Au+oSC7HTwkWz9lU3O4A/RM30pTXIcwCcTQ/5LKc7jbE80ZiH7d7POg/q22p5ExV =5At2 -----END PGP SIGNATURE----- --------------enigC3797587F8402752E7F7E6BC-- |