CVE-2013-2022 in Jplayer
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in actionscript/Jplayer.as in the Flash SWF component in jPlayer before 2.2.23 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors, a different vulnerability than CVE-2013-1942 and CVE-2013-2023.
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Analysis
by VulDB Data Team • 01/04/2022
The cross-site scripting vulnerability identified as CVE-2013-2022 affects the jPlayer Flash SWF component specifically within the actionscript/Jplayer.as file of jPlayer versions prior to 2.2.23. This vulnerability represents a classic web application security flaw that enables remote attackers to execute malicious scripts within the context of a victim's browser session. The vulnerability resides in the Flash-based media player component that jPlayer uses to deliver multimedia content, creating a potential attack surface that extends beyond the standard web application boundaries into the Flash runtime environment. Unlike similar vulnerabilities such as CVE-2013-1942 and CVE-2013-2023, this particular flaw manifests through distinct attack vectors that specifically target the Flash SWF component's handling of user-supplied input.
The technical implementation of this XSS vulnerability stems from insufficient input validation and output encoding within the Flash ActionScript code that processes parameters passed to the jPlayer component. When the Flash SWF component receives data from web applications or external sources, it fails to properly sanitize or escape this input before incorporating it into dynamic HTML or JavaScript content. This improper handling allows attackers to inject malicious payloads that get executed when the Flash player renders the affected content. The vulnerability is particularly concerning because Flash components often operate with elevated privileges and can access browser resources that traditional web application security measures might not adequately protect. The attack typically involves crafting malicious input that gets embedded into the Flash player's output, which then executes in the victim's browser when the media player loads.
The operational impact of this vulnerability extends significantly beyond simple script injection, as it can enable attackers to perform session hijacking, steal sensitive user data, redirect users to malicious websites, or even execute more sophisticated attacks through the Flash player's capabilities. When exploited, this vulnerability allows attackers to manipulate the Flash SWF component to execute arbitrary code within the victim's browser context, potentially compromising the entire user session and accessing sensitive information that the user might have authenticated to access. The attack can be particularly effective in environments where users trust the jPlayer-based media player or where the vulnerable component is integrated into enterprise applications. The vulnerability's persistence across multiple versions of jPlayer indicates a fundamental flaw in the input handling mechanisms that required a comprehensive code review and patching approach to address properly. Organizations using jPlayer versions prior to 2.2.23 faced significant risk of exploitation in environments where users might encounter malicious content through various attack vectors including social engineering, compromised websites, or malicious advertisements.
Mitigation strategies for CVE-2013-2022 primarily involve updating to jPlayer version 2.2.23 or later, which includes proper input sanitization and output encoding mechanisms that prevent the injection of malicious content into the Flash component. Security teams should also implement comprehensive input validation at multiple layers including web application firewalls, content security policies, and proper parameter sanitization before any data enters the Flash SWF component. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws in software implementations, and it can be mapped to ATT&CK technique T1059.007 for script injection attacks. Organizations should also consider implementing content security policy headers to limit the execution of inline scripts and reduce the impact of potential XSS exploitation. Additionally, regular security audits of Flash-based components and comprehensive patch management processes should be established to prevent similar vulnerabilities from emerging in other legacy components that might be similarly exposed to cross-site scripting attacks.