hostapd invalid EAPoL frame denial of service
| hostapd-eapol-dos (26239) |  Low Risk |
Description:
hostapd is vulnerable to a denial of service, caused by a buffer overflow in the wpa.c file. By sending an EAPoL frame with an overly long key_data_length field, a remote attacker could overflow a buffer and cause the hostapd daemon to crash.
Platforms Affected:
- Debian, Debian Linux 3.1
- FreeBSD, FreeBSD
- Jouni Malinen, hostapd 0.3.7
- MandrakeSoft, Mandrake Linux 2006
- MandrakeSoft, Mandrake Linux 2006 X86_64
- MandrakeSoft, Mandrake Linux LE2005
- MandrakeSoft, Mandrake Linux LE2005 X86_64
Remedy:
For Debian GNU/Linux:
Refer to DSA-1065-1 for patch, upgrade, or suggested workaround information. See References.
Consequences:
Denial of Service
References:
- Debian Bug report logs - #365897, seg fault error in hostapd at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=365897.
- hostapd Web page, hostapd: IEEE 802.11 AP, IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator at http://hostap.epitest.fi/hostapd/.
- BID-17846: hostapd Invalid EAPOL Key Length Remote Denial Of Service Vulnerability
- CVE-2006-2213: Hostapd 0.3.7-2 allows remote attackers to cause a denial of service (segmentation fault) via an unspecified value in the key_data_length field of an EAPoL frame.
- DSA-1065: hostapd -- missing input sanitising
- MDKSA-2006:088: Updated hostapd package to address DoS vulnerability
- OSVDB ID: 25233: Hostapd EAPoL Frame Handling Remote DoS
- SA19966: Hostapd EAPoL Frame Handling Denial of Service
- VUPEN/ADV-2006-1657: Hostapd EAPoL Frame key_data_length Handling Denial of Service Vulnerability
Reported:
May 03, 2006
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