CVE-2022-2015 in drawio
Summary
by MITRE • 06/09/2022
Cross-site Scripting (XSS) - Stored in GitHub repository jgraph/drawio prior to 19.0.2.
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Analysis
by VulDB Data Team • 06/15/2022
The vulnerability identified as CVE-2022-2015 represents a stored cross-site scripting flaw within the jgraph/drawio repository, which is a widely used diagramming tool for creating various types of technical drawings and flowcharts. This repository serves as the foundation for drawio desktop and web applications, making it a critical component in enterprise environments where diagramming and documentation tools are extensively utilized. The vulnerability specifically affects versions prior to 19.0.2, indicating that the security flaw was introduced in the software development lifecycle and remained unpatched for an extended period. The presence of this vulnerability in a diagramming tool is particularly concerning as users often create diagrams containing sensitive business information, technical specifications, and architectural designs that could be exploited by malicious actors.
The technical implementation of this stored XSS vulnerability stems from insufficient input validation and output encoding within the application's processing of user-supplied data. When users create diagrams or import content into the drawio application, the system stores user-generated content in a persistent manner. The flaw occurs during the rendering process where the application fails to properly sanitize or encode user inputs before displaying them in the web interface. This allows attackers to inject malicious scripts that execute in the context of other users' browsers when they view affected diagrams. The stored nature of this vulnerability means that once malicious code is injected into the system, it persists and affects all users who access the compromised content, making it particularly dangerous in collaborative environments where multiple users share diagrams and documentation.
The operational impact of CVE-2022-2015 extends beyond simple script execution, as it provides attackers with the capability to perform session hijacking, data theft, and privilege escalation within the affected environments. Attackers could exploit this vulnerability to steal user credentials, access sensitive business information, or manipulate the diagramming content to inject malicious links or code that could propagate to other users. The vulnerability's presence in a diagramming tool creates additional risks as diagrams often contain confidential information about system architectures, network layouts, and business processes that could be leveraged for further attacks. Organizations using drawio in their infrastructure could face significant security implications, including potential data breaches, unauthorized access to critical systems, and compromise of intellectual property contained within the diagramming applications.
Mitigation strategies for this vulnerability require immediate patching of the affected software to version 19.0.2 or later, which would address the input validation and output encoding deficiencies. Organizations should implement comprehensive monitoring of diagramming activities and user inputs to detect potential exploitation attempts. Network segmentation and web application firewalls can provide additional layers of protection by filtering malicious payloads before they reach the vulnerable application. Security teams should also conduct thorough vulnerability assessments of all diagramming tools and collaborative platforms within their environment, as similar issues may exist in related software components. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and could be categorized under ATT&CK technique T1566 for initial access through malicious content, highlighting the need for comprehensive security controls around user-generated content processing. Regular security awareness training for users on identifying potentially malicious diagram content and implementing proper input validation procedures should also be considered as part of the overall security posture improvement.