CVE-2022-23458 in Toast UI Grid
Summary
by MITRE • 09/23/2022
Toast UI Grid is a component to display and edit data. Versions prior to 4.21.3 are vulnerable to cross-site scripting attacks when pasting specially crafted content into editable cells. This issue was fixed in version 4.21.3. There are no known workarounds.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 09/23/2022
The vulnerability identified as CVE-2022-23458 affects Toast UI Grid, a popular data display and editing component used in web applications. This component is widely utilized for creating interactive tables and grids that allow users to view and modify data directly within the browser interface. The flaw resides in the component's handling of clipboard operations, specifically when users paste content into editable cells. Prior to version 4.21.3, the grid component failed to properly sanitize or escape user input during paste operations, creating a significant security risk that could be exploited by malicious actors.
The technical nature of this vulnerability aligns with CWE-79, which describes cross-site scripting flaws that occur when untrusted data is incorporated into web pages without proper validation or escaping. The vulnerability manifests when users paste specially crafted content containing malicious scripts into editable grid cells. When the grid component renders this content, it does not adequately filter or escape the input, allowing potentially harmful JavaScript code to execute within the context of the user's browser session. This creates a persistent XSS attack vector that can be exploited to steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users.
The operational impact of this vulnerability is substantial as it affects any web application that utilizes Toast UI Grid components with editable cells. Attackers could exploit this weakness by crafting malicious paste content that includes script tags or other malicious payloads. Once pasted into editable cells, these scripts would execute in the context of the victim's browser, potentially leading to session hijacking, data theft, or further exploitation of the application. The vulnerability is particularly concerning because it requires no user interaction beyond the simple act of pasting content, making it an easy target for social engineering attacks where users might unknowingly paste malicious content from untrusted sources.
Mitigation strategies for CVE-2022-23458 involve immediate upgrading to Toast UI Grid version 4.21.3 or later, which includes proper input sanitization and escaping mechanisms. Organizations should conduct thorough security assessments of all applications using this component to identify any potential exposure. The vulnerability does not have known workarounds as the issue stems from the core input handling mechanism that requires proper sanitization at the component level. Security teams should monitor for any related attacks targeting this specific XSS vector and consider implementing additional security controls such as content security policies to limit the impact of potential exploitation. This vulnerability demonstrates the importance of proper input validation in web applications and aligns with ATT&CK technique T1059.007 for script injection attacks, highlighting the critical need for robust sanitization of user-provided content in interactive web components.