ID

VAR-E-201104-0344


TITLE

Linksys WRT54G Cross Site Scripting

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DESCRIPTION

The Cisco Linksys Wireless G Broadband Router WRT54G with firmware version 4.21.1 suffers from a cross site scripting vulnerability.

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AFFECTED PRODUCTS

vendor:linksysmodel:wrt54gscope: - version: -

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EXPLOIT

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Hash: SHA1

Description of Vulnerability:
- -----------------------------
Linksys WRT54G is a consumer wireless G broadband router and four port
switch (http://www.linksysbycisco.com/ANZ/en/support/WRT54G). The
device provides an administration interface for configuration via a web
browser. Unfortunately the interface does not sanitize keywords for
safe browsing leading to a stored/persistent cross site scripting (XSS)
vulnerability.

Systems affected:
- -----------------
Cisco Linksys Wireless G Boradband Router WRT54G with firmware version
4.21.1 was tested and found to be vulnerable.

Proof of Concept:
- -----------------
1. Log into the WRT54G administration screen and navigate to /Filters.asp
2. Enter "' onBlur='alert("xss")" for the "Website Blocking by Keyword"
value.
3. Click the 'Save Settings' button at the bottom of the form, ignore
the error and click 'Continue'
4. After the page refreshes click on the "Website Blocking by Keyword"
textfield then click outside to view the JavaScript alert

- --
Justin Klein Keane
http://www.MadIrish.net

The digital signature on this e-mail may be confirmed using the
PGP key located at: http://www.madirish.net/gpgkey
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sources: PACKETSTORM: 100951

EXPLOIT HASH

LOCAL

SOURCE

md5: aa5edbdd4aa13e436f9c2ffc6695daaa
sha-1: 3169326106f236a64b20d32ed92ef127881ba7bf
sha-256: 33023e6063d14ffdaada37d384498349e1d019e88d22a6bd58eef458b22376b7
md5: aa5edbdd4aa13e436f9c2ffc6695daaa

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PRICE

free

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TYPE

xss

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TAGS

tag:exploit

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tag:xss

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CREDITS

Justin C. Klein Keane

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EXTERNAL IDS

db:PACKETSTORMid:100951

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sources: PACKETSTORM: 100951

SOURCES

db:PACKETSTORMid:100951

LAST UPDATE DATE

2022-07-27T09:33:14.299000+00:00


SOURCES RELEASE DATE

db:PACKETSTORMid:100951date:2011-04-29T03:14:38