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TITLE:
Linksys WRT54GS Wireless Encryption Security Bypass

SECUNIA ADVISORY ID:
SA16457

VERIFY ADVISORY:
http://secunia.com/advisories/16457/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass

WHERE:
>From remote

OPERATING SYSTEM:
Linksys WRT54GS Wireless-G Broadband Router with SpeedBooster
http://secunia.com/product/5549/

DESCRIPTION:
Steve Scherf has reported a security issue in Linksys WRT54GS, which
can be exploited by malicious people to bypass certain security
restrictions.

The security issue is caused due the router allowing wireless clients
that are not using any encryption to access the wireless network even
when WPA Personal/TKIP wireless security setting has been enabled.

Successful exploitation may require that "Restore Factory Defaults"
is not used after performing a firmware upgrade.

The security issue has been reported in firmware version 4.50.6.
Other versions may also be affected.

SOLUTION:
The security issue has reportedly been fixed in version 4.70.6.

PROVIDED AND/OR DISCOVERED BY:
Steve Scherf

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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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