ZDI-08-070: SonicWALL Content-Filtering Universal Script Injection Vulnerability Oct 30 2008 07:16PM
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ZDI-08-070: SonicWALL Content-Filtering Universal Script Injection



October 30, 2008

-- Affected Vendors:


-- Affected Products:

SonicWALL Pro 2040

-- TippingPoint(TM) IPS Customer Protection:

TippingPoint IPS customers have been protected against this

vulnerability by Digital Vaccine protection filter ID 2023, 3886.

For further product information on the TippingPoint IPS, visit:


-- Vulnerability Details:

This vulnerability allows remote attackers to execute a script injection

attack on arbitrary sites through vulnerable installations of SonicWALL.

User interaction is required to exploit this vulnerability in that the

target must visit a malicious web page or open a malicious web link.

The specific flaw exists in the default error page displayed when a user

requests access to a web site that is blocked based on the devices

content-filtering rules. Insufficient sanity checks allow an attacker to

craft a URL that will trigger an error and simultaneously inject a

malicious script. As the browser is unable to differentiate between

content delivered from the original top level site requested and the

inline device, the script injection occurs under the context of the

target domain. This can result in various further compromise.

-- Vendor Response:

SonicWALL has issued an update to correct this vulnerability. More

details can be found at:


-- Disclosure Timeline:

2008-06-25 - Vulnerability reported to vendor

2008-10-30 - Coordinated public release of advisory

-- Credit:

This vulnerability was discovered by:

* Adrian 'pagvac' Pastor | GNUCITIZEN | www.gnucitizen.org

-- About the Zero Day Initiative (ZDI):

Established by TippingPoint, The Zero Day Initiative (ZDI) represents

a best-of-breed model for rewarding security researchers for responsibly

disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research

through the ZDI can find more information and sign-up at:


The ZDI is unique in how the acquired vulnerability information is

used. TippingPoint does not re-sell the vulnerability details or any

exploit code. Instead, upon notifying the affected product vendor,

TippingPoint provides its customers with zero day protection through

its intrusion prevention technology. Explicit details regarding the

specifics of the vulnerability are not exposed to any parties until

an official vendor patch is publicly available. Furthermore, with the

altruistic aim of helping to secure a broader user base, TippingPoint

provides this vulnerability information confidentially to security

vendors (including competitors) who have a vulnerability protection or

mitigation product.

Our vulnerability disclosure policy is available online at:


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