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Gentoo Linux Security Advisory GLSA 200908-08 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: ISC DHCP: dhcpd Denial of Service |
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Date: August 18, 2009 |
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Bugs: #275231 |
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ID: 200908-08 |
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Synopsis |
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======== |
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dhcpd as included in the ISC DHCP implementation does not properly |
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handle special conditions, leading to a Denial of Service. |
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Background |
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========== |
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|
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ISC DHCP is the reference implementation of the Dynamic Host |
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Configuration Protocol as specified in RFC 2131. |
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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-misc/dhcp < 3.1.2_p1 >= 3.1.2_p1 |
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Description |
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=========== |
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|
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Christoph Biedl discovered that dhcpd does not properly handle certain |
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DHCP requests when configured both using "dhcp-client-identifier" and |
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"hardware ethernet". |
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Impact |
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====== |
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A remote attacker might send a specially crafted request to dhcpd, |
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possibly resulting in a Denial of Service (daemon crash). |
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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 ISC DHCP users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose =net-misc/dhcp-3.1.2_p1 |
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References |
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========== |
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[ 1 ] CVE-2009-1892 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1892 |
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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-200908-08.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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https://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2009 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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http://creativecommons.org/licenses/by-sa/2.5 |
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