drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Denial of Service in MaraDNS
Name: |
Denial of Service in MaraDNS |
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ID: |
201202-03 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Do, 23. Februar 2012, 10:49 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-0024 |
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Applikationen: |
MaraDNS |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201202-03 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: MaraDNS: Denial of Service Date: February 22, 2012 Bugs: #397431 ID: 201202-03
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Synopsis ========
A hash collision vulnerability in MaraDNS allows remote attackers to cause a Denial of Service condition.
Background ==========
MaraDNS is a proxy DNS server with permanent caching.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-dns/maradns < 1.4.09 >= 1.4.09
Description ===========
MaraDNS does not properly randomize hash functions to protect against hash collision attacks.
Impact ======
A remote attacker could send many specially crafted DNS recursive queries, possibly resulting in a Denial of Service condition.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All MaraDNS users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/maradns-1.4.09"
References ==========
[ 1 ] CVE-2012-0024 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0024
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201202-03.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
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