Stormshield Network Security 3.7.10 Captive Portal auth/lang.html rurl redirect

Summaryinfo

A vulnerability labeled as problematic has been found in Stormshield Network Security 3.7.10. This affects an unknown part of the file auth/lang.html of the component Captive Portal. Executing a manipulation of the argument rurl with the input //example.com as part of Query String can lead to redirect. This vulnerability is registered as CVE-2020-8430. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in Stormshield Network Security 3.7.10. This vulnerability affects an unknown part of the file auth/lang.html of the component Captive Portal. The manipulation of the argument rurl with the input value //example.com leads to a redirect vulnerability. The CWE definition for the vulnerability is CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Stormshield Network Security 310 3.7.10 devices have an auth/lang.html?rurl= Open Redirect vulnerability on the captive portal. For example, the attacker can use rurl=//example.com instead of rurl=https://example.com in the query string.

The weakness was published 04/13/2020 (Website). The advisory is shared for download at advisories.stormshield.eu. This vulnerability was named CVE-2020-8430 since 01/29/2020. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1204.001.

By approaching the search of inurl:auth/lang.html it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Stormshield

Name

• Network Security

Version

• 3.7.10

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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