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Gentoo Linux Security Advisory GLSA 200711-09 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: MadWifi: Denial of Service |
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Date: November 07, 2007 |
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Bugs: #195705 |
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ID: 200711-09 |
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Synopsis |
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======== |
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|
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MadWifi does not correctly process beacon frames which can lead to a |
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remotely triggered Denial of Service. |
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|
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Background |
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========== |
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|
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The MadWifi driver provides support for Atheros based IEEE 802.11 |
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Wireless Lan cards. |
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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-wireless/madwifi-ng < 0.9.3.3 >= 0.9.3.3 |
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|
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Description |
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=========== |
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|
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Clemens Kolbitsch and Sylvester Keil reported an error when processing |
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beacon frames with an overly large "length" value in the "xrates" |
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element. |
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|
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Impact |
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====== |
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|
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A remote attacker could act as an access point and send a specially |
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crafted packet to an Atheros based wireless client, possibly resulting |
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in a Denial of Service (kernel panic). |
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|
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Workaround |
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========== |
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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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|
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All MadWifi 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-wireless/madwifi-ng-0.9.3.3" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2007-5448 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5448 |
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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-200711-09.xml |
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|
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Concerns? |
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========= |
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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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|
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Copyright 2007 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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