Linksys Products Information Disclosure Security Issue
Secunia Advisory: SA24658
Release Date: 2007-03-30
Last Update: 2007-04-19
Popularity: 10,316 views

Critical:
Moderately critical
Impact: Exposure of system information
Exposure of sensitive information
Where: From local network
Solution Status: Vendor Patch

OS:Linksys WAG200G
Linksys WRT54GC

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Description:
A security issue has been reported in various Linksys products, which can be exploited to disclose certain sensitive information.

The problem is that it is possible to disclose certain information e.g. the product model, the web interface password, the PPPoA username, the PPPoA password, the SSID, and the WPA passphrase by sending a UDP packet to port 916 of the device.

The security issue is reported in WAG200G with firmware 1.01.03 and earlier, WRT54GC v1 with firmware 1.03.0 and earlier, and WRT54GC v2 with firmware 1.00.7 and earlier.

Solution:
Update to the latest firmware versions.

Provided and/or discovered by:
Daniel Niggebrugge, additional information by Bartomiej Ochman.

Changelog:
2007-04-19: Updated "Solution" and "Solution Status" sections.


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