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Gentoo Linux Security Advisory GLSA 200605-10 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: pdnsd: Denial of Service and potential arbitrary code |
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execution |
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Date: May 10, 2006 |
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Bugs: #131341 |
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ID: 200605-10 |
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Synopsis |
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======== |
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|
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pdnsd is vulnerable to a buffer overflow that may result in arbitrary |
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code execution. |
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|
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Background |
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========== |
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|
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pdnsd is a proxy DNS server with permanent caching that is designed to |
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cope with unreachable DNS servers. |
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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/pdnsd < 1.2.4 >= 1.2.4 |
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|
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Description |
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=========== |
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|
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The pdnsd team has discovered an unspecified buffer overflow |
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vulnerability. The PROTOS DNS Test Suite, by the Oulu University Secure |
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Programming Group (OUSPG), has also revealed a memory leak error within |
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the handling of the QTYPE and QCLASS DNS queries, leading to |
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consumption of large amounts of memory. |
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|
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Impact |
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====== |
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|
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An attacker can craft malicious DNS queries leading to a Denial of |
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Service, and potentially the execution of arbitrary code. |
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|
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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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|
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Resolution |
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========== |
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All pdnsd users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-dns/pdnsd-1.2.4-r1" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2006-2076 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2076 |
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[ 2 ] CVE-2006-2077 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2077 |
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|
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Availability |
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============ |
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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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|
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http://security.gentoo.org/glsa/glsa-200605-10.xml |
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|
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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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|
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License |
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======= |
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Copyright 2006 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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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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