Debian: DSA-2557-1: hostapd security update

Timo Warns discovered that the internal authentication server of hostapd, a user space IEEE 802.11 AP and IEEE 802.1X/WPA/WPA2/EAP Authenticator, is vulnerable to a buffer overflow when processing fragmented EAP-TLS messages. As a result, an internal overflow checking routine terminates

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Debian Security Advisory DSA-2557-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                                Nico Golde
October 08, 2012                       https://www.debian.org/security/faq
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Package        : hostapd
Vulnerability  : buffer overflow
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2012-4445

Timo Warns discovered that the internal authentication server of hostapd,
a user space IEEE 802.11 AP and IEEE 802.1X/WPA/WPA2/EAP Authenticator,
is vulnerable to a buffer overflow when processing fragmented EAP-TLS
messages.  As a result, an internal overflow checking routine terminates
the process.  An attacker can abuse this flaw to conduct denial of service
attacks via crafted EAP-TLS messages prior to any authentication.

For the stable distribution (squeeze), this problem has been fixed in
version 0.6.10-2+squeeze1.

For the testing (wheezy) and unstable (sid) distributions, this problem
will be fixed soon.


We recommend that you upgrade your hostapd packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

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