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Gentoo Linux Security Advisory GLSA 200704-15 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: MadWifi: Multiple vulnerabilities |
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Date: April 17, 2007 |
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Bugs: #173434 |
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ID: 200704-15 |
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Synopsis |
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======== |
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|
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Multiple vulnerabilities have been discovered in the MadWifi driver, |
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possibly leading to a Denial of Service and information disclosure. |
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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 >= 0.9.3 |
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|
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Description |
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=========== |
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|
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The driver does not properly process Channel Switch Announcement |
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Information Elements, allowing for an abnormal channel change. The |
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ieee80211_input() function does not properly handle AUTH frames and the |
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driver sends unencrypted packets before WPA authentication succeeds. |
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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 send specially crafted AUTH frames to the |
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vulnerable host, resulting in a Denial of Service by crashing the |
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kernel. A remote attacker could gain access to sensitive information |
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about network architecture by sniffing unencrypted packets. A remote |
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attacker could also send a Channel Switch Count less than or equal to |
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one to trigger a channel change, resulting in a communication loss and |
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a Denial of Service. |
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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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Resolution |
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========== |
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All MadWifi users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-wireless/madwifi-ng-0.9.3" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2007-7178 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-7178 |
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[ 2 ] CVE-2007-7179 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-7179 |
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[ 3 ] CVE-2007-7180 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-7180 |
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|
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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-200704-15.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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|
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License |
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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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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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