CVE-2022-2932 in mobiledoc-kit
Summary
by MITRE • 08/22/2022
Cross-site Scripting (XSS) - Reflected in GitHub repository bustle/mobiledoc-kit prior to 0.14.2.
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Analysis
by VulDB Data Team • 09/24/2022
The vulnerability identified as CVE-2022-2932 represents a cross-site scripting flaw classified as reflected XSS within the GitHub repository bustle/mobiledoc-kit prior to version 0.14.2. This issue resides in a JavaScript-based content editing framework that facilitates rich text composition and rendering. The mobiledoc-kit library serves as a foundation for building rich text editors and is widely utilized in web applications requiring sophisticated content creation capabilities. The reflected XSS vulnerability emerges from improper input sanitization mechanisms within the library's handling of user-supplied data that gets echoed back in the application's response without adequate escaping or validation.
The technical flaw manifests when malicious input containing script tags or other executable code is processed by the mobiledoc-kit library and subsequently reflected back to users through the web interface. This occurs because the library fails to properly sanitize or escape user-provided parameters before incorporating them into dynamically generated HTML content. Attackers can exploit this weakness by crafting malicious payloads that, when processed by the vulnerable library, execute arbitrary JavaScript code in the context of other users' browsers. The reflected nature of this vulnerability means that the malicious script is not stored on the server but is instead injected through the application's response to a specific user request containing the malicious input.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform various malicious activities including session hijacking, credential theft, data exfiltration, and redirection to malicious sites. When exploited, the vulnerability allows unauthorized individuals to compromise user sessions and potentially gain access to sensitive information or perform actions on behalf of affected users. The severity is particularly concerning given that mobiledoc-kit is used in numerous web applications where users may have elevated privileges or access to confidential data. This vulnerability can be exploited across multiple applications that depend on the library, amplifying its potential impact throughout the ecosystem.
Mitigation strategies for CVE-2022-2932 involve immediate upgrading to version 0.14.2 or later of the mobiledoc-kit library where the XSS vulnerability has been addressed through proper input sanitization and output escaping mechanisms. Organizations should conduct comprehensive vulnerability assessments to identify all applications utilizing vulnerable versions of the library and prioritize remediation efforts accordingly. The fix typically implements proper HTML escaping of user inputs and employs content security policies to prevent script execution. This vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and maps to ATT&CK technique T1531 which covers the use of malicious scripts for privilege escalation and data theft. Security teams should also implement input validation at multiple layers and consider additional defensive measures such as web application firewalls and runtime application self-protection mechanisms to provide defense-in-depth against similar vulnerabilities.