CVE-2019-10089 in JSPWiki
Summary
by MITRE
On Apache JSPWiki, up to version 2.11.0.M4, a carefully crafted plugin link invocation could trigger an XSS vulnerability on Apache JSPWiki, related to the WYSIWYG editor, which could allow the attacker to execute javascript in the victim's browser and get some sensitive information about the victim.
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Analysis
by VulDB Data Team • 12/27/2023
The vulnerability CVE-2019-10089 represents a cross-site scripting flaw in Apache JSPWiki versions up to 2.11.0.M4 that specifically targets the WYSIWYG editor component. This vulnerability arises from insufficient input validation and output encoding mechanisms when processing plugin link invocations within the rich text editing interface. The flaw exists in the way the application handles user-supplied data that flows through the WYSIWYG editor, creating an avenue for malicious script execution in victim browsers.
The technical implementation of this vulnerability stems from improper sanitization of plugin parameters that are passed to the WYSIWYG editor. When users create or modify content using the editor and include specially crafted plugin links, the application fails to adequately escape or filter the input before rendering it in the browser context. This allows attackers to inject malicious javascript code that executes within the victim's browser session, leveraging the trust relationship between the user and the wiki application. The vulnerability specifically manifests when plugin parameters contain unescaped javascript code that gets interpreted by the browser during page rendering.
From an operational impact perspective, this vulnerability enables attackers to perform session hijacking, credential theft, and data exfiltration attacks against authenticated users. The attacker can craft malicious plugin links that, when clicked by a victim, execute scripts to steal session cookies, capture keystrokes, or redirect users to malicious sites. The WYSIWYG editor's rich text capabilities make it particularly susceptible to such attacks since it processes complex markup and plugin interactions that are not properly sanitized. This vulnerability is especially dangerous in collaborative environments where multiple users interact with the wiki, as it can be exploited through social engineering or by compromising a single user's session.
The mitigation strategies for CVE-2019-10089 involve immediate patching to the affected Apache JSPWiki versions, implementing proper input validation and output encoding mechanisms, and configuring the application to sanitize all plugin parameters before processing. Organizations should also consider implementing content security policies to limit script execution and monitor for suspicious plugin usage patterns. This vulnerability aligns with CWE-79 which addresses cross-site scripting flaws, and maps to ATT&CK technique T1566 related to spearphishing with malicious attachments or links. The fix requires ensuring that all user-supplied content passed to the WYSIWYG editor is properly escaped and validated, with particular attention to plugin parameter handling and rich text rendering processes.