Ninja Forms Plugin up to 3.3.19.0 on WordPress step-processing.php redirect

Summaryinfo

A vulnerability was found in Ninja Forms Plugin up to 3.3.19.0 on WordPress. It has been declared as problematic. The impacted element is an unknown function in the library lib/StepProcessing/step-processing.php. Executing a manipulation of the argument redirect as part of Parameter can lead to redirect. This vulnerability is registered as CVE-2018-19796. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Ninja Forms Plugin up to 3.3.19.0 on WordPress (WordPress Plugin). It has been declared as critical. This vulnerability affects some unknown processing in the library lib/StepProcessing/step-processing.php. The manipulation of the argument redirect as part of a Parameter 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:

An open redirect in the Ninja Forms plugin before 3.3.19.1 for WordPress allows Remote Attackers to redirect a user via the lib/StepProcessing/step-processing.php (aka submissions download page) redirect parameter.

The bug was discovered 11/29/2018. The weakness was published 12/03/2018 (Website). The advisory is shared for download at plugins.trac.wordpress.org. This vulnerability was named CVE-2018-19796 since 12/03/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1204.001.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:lib/StepProcessing/step-processing.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 3.3.19.1 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• Ninja Forms Plugin

Version

• 3.3.0
• 3.3.1
• 3.3.2
• 3.3.3
• 3.3.4
• 3.3.5
• 3.3.6
• 3.3.7
• 3.3.8
• 3.3.9
• 3.3.10
• 3.3.11
• 3.3.12
• 3.3.13
• 3.3.14
• 3.3.15
• 3.3.16
• 3.3.17
• 3.3.18
• 3.3.19.0

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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