- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200704-15 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: MadWifi: Multiple vulnerabilities Date: April 17, 2007 Bugs: #173434 ID: 200704-15 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities have been discovered in the MadWifi driver, possibly leading to a Denial of Service and information disclosure. Background ========== The MadWifi driver provides support for Atheros based IEEE 802.11 Wireless Lan cards. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-wireless/madwifi-ng < 0.9.3 >= 0.9.3 Description =========== The driver does not properly process Channel Switch Announcement Information Elements, allowing for an abnormal channel change. The ieee80211_input() function does not properly handle AUTH frames and the driver sends unencrypted packets before WPA authentication succeeds. Impact ====== A remote attacker could send specially crafted AUTH frames to the vulnerable host, resulting in a Denial of Service by crashing the kernel. A remote attacker could gain access to sensitive information about network architecture by sniffing unencrypted packets. A remote attacker could also send a Channel Switch Count less than or equal to one to trigger a channel change, resulting in a communication loss and a Denial of Service. Workaround ========== There is no known workaround at this time. Resolution ========== All MadWifi users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-wireless/madwifi-ng-0.9.3" References ========== [ 1 ] CVE-2007-7178 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-7178 [ 2 ] CVE-2007-7179 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-7179 [ 3 ] CVE-2007-7180 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-7180 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200704-15.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@xxxxxxxxxx or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2007 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5
Attachment:
pgpluTb59sTk8.pgp
Description: PGP signature