drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Pufferüberlauf in MaraDNS
Name: |
Pufferüberlauf in MaraDNS |
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ID: |
201111-06 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
So, 20. November 2011, 23:05 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0520 |
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Applikationen: |
MaraDNS |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201111-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High Title: MaraDNS: Arbitrary code execution Date: November 20, 2011 Bugs: #352569 ID: 201111-06
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Synopsis ========
A buffer overflow vulnerability in MaraDNS allows remote attackers to execute arbitrary code or cause a Denial of Service.
Background ==========
MaraDNS is a proxy DNS server with permanent caching.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-dns/maradns < 1.4.06 >= 1.4.06
Description ===========
A long DNS hostname with a large number of labels could trigger a buffer overflow in the compress_add_dlabel_points() function of dns/Compress.c.
Impact ======
A remote unauthenticated attacker could execute arbitrary code or cause a Denial of Service.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All MaraDNS users should upgrade to the latest stable version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/maradns-1.4.06"
NOTE: This is a legacy GLSA. Updates for all affected architectures are available since February 12, 2011. It is likely that your system is already no longer affected by this issue.
References ==========
[ 1 ] CVE-2011-0520 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0520
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201111-06.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 2011 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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