2021-24420 | Request a Quote Plugin cross site scripting

By Max On Jul 15, 2021

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2.3	$0-$5k	0.16

A vulnerability, which was classified as problematic, has been found in Request a Quote Plugin up to 2.3.3 on WordPress (WordPress Plugin). This issue affects an unknown code block of the component Quote Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. Impacted is integrity. An attacker might be able to inject arbitrary html and script code into the web site. This would alter the appearance and would make it possible to initiate further attacks against site visitors. The summary by CVE is:

The Request a Quote WordPress plugin before 2.3.4 did not sanitise and escape some of its quote fields when adding/editing a quote as admin, leading to Stored Cross-Site scripting issues when the quote is output in the ‘All Quotes” table.

The weakness was disclosed 07/13/2021. The advisory is shared at wpscan.com. The identification of this vulnerability is CVE-2021-24420 since 01/14/2021. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are required for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 2.3.4 eliminates this vulnerability.

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