CVE-2024-26148 in Querybook
Summary
by MITRE • 02/22/2024
Querybook is a user interface for querying big data. Prior to version 3.31.1, there is a vulnerability in Querybook's rich text editor that enables users to input arbitrary URLs without undergoing necessary validation. This particular security flaw allows the use of `javascript:` protocol which can potentially trigger arbitrary client-side execution. The most extreme exploit of this flaw could occur when an admin user unknowingly clicks on a cross-site scripting URL, thereby unintentionally compromising admin role access to the attacker. A patch to rectify this issue has been introduced in Querybook version `3.31.1`. The fix is backward compatible and automatically fixes existing DataDocs. There are no known workarounds for this issue, except for manually checking each URL prior to clicking on them.
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Analysis
by VulDB Data Team • 02/22/2024
CVE-2024-26148 represents a critical client-side vulnerability in Querybook's rich text editor component that enables unauthorized arbitrary code execution through malicious URL handling. This vulnerability exists in versions prior to 3.31.1 and stems from insufficient input validation of URL protocols within the editor interface. The flaw specifically allows the javascript: protocol to be embedded in hyperlinks without proper sanitization or validation, creating an avenue for cross-site scripting attacks. The vulnerability is classified under CWE-79 as a failure to sanitize user input, which directly enables XSS conditions that can be exploited by attackers to execute malicious scripts in the context of the victim's browser session.
The operational impact of this vulnerability is severe, particularly when considering that administrators may be targeted through social engineering tactics. When an administrator clicks on a maliciously crafted URL containing javascript: protocol, the attacker can potentially execute arbitrary code within the admin's browser session, leading to complete compromise of administrative privileges. This represents a sophisticated attack vector that leverages the trust relationship between the user and the application interface, as the malicious URL appears legitimate within the rich text editor context. The vulnerability's exploitation requires minimal user interaction beyond clicking a link, making it particularly dangerous in environments where administrators frequently interact with rich text content.
The security implications extend beyond simple XSS execution to include potential privilege escalation and persistent attack vectors. When an admin user unknowingly clicks on a crafted URL, the javascript: protocol can be executed in the context of the admin's session, potentially allowing attackers to access sensitive administrative functions, modify system configurations, or exfiltrate confidential data. This vulnerability directly maps to ATT&CK technique T1566.001 for initial access through spearphishing attachments or links, and T1059.001 for command and control through client-side exploitation. The attack chain typically involves crafting malicious URLs within the Querybook interface that appear legitimate to administrators, then waiting for them to click the links.
The remediation implemented in Querybook version 3.31.1 addresses the root cause by introducing proper URL protocol validation and sanitization within the rich text editor. The fix automatically processes existing DataDocs to ensure backward compatibility while preventing future exploitation attempts. This approach aligns with security best practices for input validation and demonstrates proper vulnerability remediation. Organizations should immediately upgrade to version 3.31.1 or later to mitigate this risk, as no effective workarounds exist beyond manual URL verification. The vulnerability highlights the importance of implementing comprehensive input validation for all user-provided content, particularly in rich text editors that process potentially dangerous protocols like javascript:, data:, and vbscript:. Given the nature of the flaw, organizations should also conduct security reviews of similar rich text components within their systems to identify and remediate comparable vulnerabilities.