A vulnerability has been reported in hostapd, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to a boundary error within the "eap_server_tls_process_fragment()" function (eap_server/eap_server_tls_common.c) when handling fragment data within TLS messages. This can be exploited to cause a buffer overflow and crash the service via a specially crafted EAP-TLS message.

Successful exploitation requires that hostapd is configured to use the internal EAP authentication server.

The vulnerability is reported in versions 0.6 through 1.0.

Solution
Fixed in the GIT repository.

Provided and/or discovered by
Timo Warns, PRESENSE Technologies.

Original Advisory
PRESENSE Technologies (PRE-SA-2012-07):
http://www.pre-cert.de/advisories/PRE-SA-2012-07.txt

Other references
Further details available to Secunia VIM customers

Deep Links
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