MadWifi ath_beacon_config() function denial of service
| madwifi-athbeaconconfig-dos (34451) |  Low Risk |
Description:
MadWifi is vulnerable to a denial of service, caused by a divide-by-zero error in the ath_beacon_config() function. By sending a specially-crafted packet with a zero beacon interval, a remote attacker could cause the application to crash.
Platforms Affected:
- Canonical, Ubuntu 6.06 LTS
- Canonical, Ubuntu 6.10
- Canonical, Ubuntu 7.04
- Gentoo, Linux
- Madwifi Driver, Madwifi Driver prior to 0.9.3.1
- MandrakeSoft, Mandrake Linux 2007 X86_64
- MandrakeSoft, Mandrake Linux 2007
- MandrakeSoft, Mandrake Linux 2007.1 X86_64
- MandrakeSoft, Mandrake Linux 2007.1
- MandrakeSoft, Mandrake Linux 2008.0 X86_64
- SuSE, SuSE Linux Desktop 10.0
Remedy:
Upgrade to the latest version of MadWifi (0.9.3.1 or later), available from the MadWifi Web site. See References.
For Mandriva Linux (madwifi-source):
Refer to MDKSA-2007:132 for patch, upgrade, or suggested workaround information. See References.
For Ubuntu Linux:
Refer to USN-479-1 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux:
Refer to SUSE-SR:2007-014 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Denial of Service
References:
- MadWifi Web site, Release v0.9.3.1 at http://madwifi.org/wiki/Releases/0.9.3.1.
- BID-24114: MadWifi Multiple Denial of Service Vulnerabilities
- CVE-2007-2830: The ath_beacon_config function in if_ath.c in MadWifi before 0.9.3.1 allows remote attackers to cause a denial of service (system crash) via crafted beacon interval information when scanning for access points, which triggers a divide-by-zero error.
- GLSA-200706-04: MadWifi: Multiple vulnerabilities
- MDKSA-2007:132: Updated madwifi-source
- SA25339: MadWifi Multiple Denial of Service Vulnerabilities
- SUSE-SR:2007:014: SUSE Security Summary Report
- USN-479-1: MadWifi vulnerabilities
- VUPEN/ADV-2007-1919: MadWifi Packets Handling Multiple Remote Denial of Service Vulnerabilities
Reported:
May 23, 2007
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