Multiband Atheros Driver for WiFi (MADWIFI) giwscan_cb() and encode_ie() buffer overflow
| madwifi-giwscan-encode-bo (30800) |  High Risk |
Description:
Multiband Atheros Driver for WiFi (MADWIFI) is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the giwscan_cb() and encode_ie() functions when handling a malicious beacon request or frames with an invalid supported-rates information element. By sending a specially-crafted 802.11 management frame to a vulnerable system, a remote attacker could overflow a buffer and execute arbitrary code on the system with elevated privileges or cause the system to crash, if the attacker is in range of the affected device.
Platforms Affected:
- Canonical, Ubuntu 6.10
- Gentoo, Linux
- Madwifi Driver, Madwifi Driver 0.9.2 and prior
- Novell, OpenSUSE 10.2
- SuSE, SuSE Linux 10.0
- SuSE, SuSE Linux 9.3
- SuSE, SuSE SLED 10
Remedy:
Upgrade to the latest version of Multiband Atheros Driver for WiFi (MADWIFI) (0.9.2.1 or later), available from the MADwiFi News Web site. See References.
For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 200612-09 for patch, upgrade, or suggested workaround information. See References.
For Ubuntu Linux:
Refer to USN-404-1 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Gain Access
References:
- Full-Disclosure Mailing List, Fri Dec 08 2006 - 13:08:48 CST, [Madwifi] Madwifi SIOCGIWSCAN buffer overflow // France Telecom at http://archives.neohapsis.com/archives/fulldisclosure/2006-12/0155.html.
- MADwiFi News 20061207, Release 0.9.2.1 fixes critical security issue at http://madwifi.org/wiki/news/20061207/release-0-9-2-1-fixes-critical-security-issue.
- SourceForge.net, MADWIFI at http://sourceforge.net/projects/madwifi/.
- BID-21486: MADWiFi Linux Kernel Device Driver Multiple Remote Buffer Overflow Vulnerabilities
- CVE-2006-6332: Stack-based buffer overflow in net80211/ieee80211_wireless.c in MadWifi before 0.9.2.1 allows remote attackers to execute arbitrary code via unspecified vectors, related to the encode_ie and giwscan_cb functions.
- GLSA-200612-09: MadWifi: Kernel driver buffer overflow
- SA23277: MadWifi Buffer Overflow Vulnerability
- SUSE-SA:2006:074: gpg stack corruption problem
- SUSE-SR:2006:028: SUSE Security Summary Report
- US-CERT VU#925529: Madwifi wireless driver buffer overflow vulnerability
- USN-404-1: MadWifi vulnerability
- VUPEN/ADV-2006-4901: Madwifi Driver giwscan_cb() and encode_ie() Remote Buffer Overflow Vulnerability
Reported:
Dec 07, 2006
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