SecurityReason - ZYWALL Referer Header XSS Vulnerability

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Details : SecurityAlert

Topic :

ZYWALL Referer Header XSS Vulnerability

SecurityAlert : 3869

CVE : CVE-2008-2167

SecurityRisk : Low alert

(About)

Remote Exploit : Yes

Local Exploit : No

Exploit Given : Yes

Credit : Deniz Cevik

Published : 14.05.2008

Affected Software :

Zyxel ZYWall 100

Advisory Text :

Affected Software/Device: Zyxel ZYWall 100

Vulnerability: Cross Site Scripting

Risk: Low

Description: The ZyWALL 100 is designed to act as a secure gateway via
xDSL/Cable modems or broadband routers for small to medium size
companies. The ZyWALL 100 features an ICSA certified firewall, IPSec VPN
capability, MultiNAT, web pages content filtering and an embedded web
configurator for easy configuration and management.

ZyWALL web based management interface utilizes referer header for
serving 404 Error pages. The vulnerability can be exploited by
requesting a non-existing web page with a specially crafted referer
header. As the application does not properly sanitize the data contained
in the referer header, desired script code can be run on client browser.

Sample Request:

GET /blah.htm HTTP/1.1
Host: www.site.com
Referer: blaaaa"><script>alert(12345)</script>aaaah.htm

Deniz CEVIK
www.intellectpro.com.tr

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