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Gentoo Linux Security Advisory GLSA 200507-16 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: dhcpcd: Denial of Service vulnerability |
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Date: July 15, 2005 |
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Bugs: #98394 |
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ID: 200507-16 |
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Synopsis |
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======== |
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A vulnerability in dhcpcd may cause the dhcpcd daemon to crash. |
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Background |
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========== |
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dhcpcd is a standards compliant DHCP client daemon. It requests an IP |
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address and other information from the DHCP server, automatically |
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configures the network interface, and tries to renew the lease time. |
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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/dhcpcd < 1.3.22_p4-r11 >= 1.3.22_p4-r11 |
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Description |
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=========== |
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|
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infamous42md discovered that dhcpcd can be tricked to read past the end |
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of the supplied DHCP buffer. As a result, this might lead to a crash of |
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the daemon. |
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Impact |
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====== |
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With a malicious DHCP server an attacker could cause a Denial of |
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Service by crashing the DHCP client. |
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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 dhcpcd users should upgrade to the latest available version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-misc/dhcpcd-1.3.22_p4-r11" |
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References |
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========== |
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[ 1 ] CAN-2005-1848 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1848 |
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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-200507-16.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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http://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2005 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/2.0 |
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