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TITLE:
Cisco IP Phone 7921 Insecure PEAP Implementation

SECUNIA ADVISORY ID:
SA29082

VERIFY ADVISORY:
http://secunia.com/advisories/29082/

CRITICAL:
Less critical

IMPACT:
Exposure of sensitive information

WHERE:
>From local network

OPERATING SYSTEM:
Cisco IP Phone 7921
http://secunia.com/product/17833/

DESCRIPTION:
A security issue has been reported in Cisco IP Phone 7921, which
potentially can be exploited by malicious people to disclose
sensitive information.

The problem is that server certificates are not validated when using
the PEAP protocol. This can be exploited to e.g.  gain knowledge of
authentication credentials when a user is tricked into connecting to
a malicious authentication server.

SOLUTION:
The vendor is reportedly working on a update and recommends using
EAP-TLS instead of PEAP.

PROVIDED AND/OR DISCOVERED BY:
Unknown researchers reported via ZDNet's Zero Day blog.

OTHER REFERENCES:
http://blogs.zdnet.com/security/?p=896
http://blogs.zdnet.com/security/?p=901

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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