CVE-2013-1808 in ZeroClipboard
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in ZeroClipboard.swf and ZeroClipboard10.swf in ZeroClipboard before 1.0.8, as used in em-shorty, RepRapCalculator, Fulcrum, Django, aCMS, and other products, allows remote attackers to inject arbitrary web script or HTML via the id parameter. NOTE: this is might be the same vulnerability as CVE-2013-1463. If so, it is likely that CVE-2013-1463 will be REJECTed.
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Analysis
by VulDB Data Team • 01/01/2022
The vulnerability described in CVE-2013-1808 represents a critical cross-site scripting flaw affecting the ZeroClipboard Flash library versions prior to 1.0.8. This issue manifests in multiple widely-used web applications and content management systems including em-shorty, RepRapCalculator, Fulcrum, Django, and aCMS, demonstrating the widespread impact of this particular security weakness. The vulnerability specifically occurs within the ZeroClipboard.swf and ZeroClipboard10.swf files, which are commonly integrated into web applications to facilitate clipboard functionality through Flash-based components.
The technical exploitation of this vulnerability occurs through the manipulation of the id parameter within the Flash component, allowing remote attackers to inject arbitrary web scripts or HTML code into the victim's browser context. This parameter handling flaw enables attackers to bypass standard security mechanisms that typically protect against malicious script injection, as the Flash component fails to properly sanitize or validate input parameters before incorporating them into the page's dynamic content. The vulnerability is classified under CWE-79, which specifically addresses Cross-Site Scripting vulnerabilities, where the flaw lies in the improper sanitization of user-provided input that is then rendered in the browser without adequate protection.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable attackers to perform a range of malicious activities including session hijacking, data theft, credential harvesting, and redirection to malicious websites. When exploited, the vulnerability allows attackers to execute arbitrary code within the context of the victim's browser session, potentially compromising user accounts and sensitive information. The widespread adoption of ZeroClipboard across various platforms and applications means that a successful exploitation could affect numerous users simultaneously, making this vulnerability particularly dangerous in enterprise environments where multiple applications may be simultaneously vulnerable.
The remediation strategy for this vulnerability requires immediate patching of all affected versions of ZeroClipboard to version 1.0.8 or later, which includes proper input validation and sanitization mechanisms. Organizations should conduct comprehensive inventory assessments to identify all systems utilizing vulnerable versions of the library, particularly within web applications that process user input through Flash components. Security measures should also include implementing proper content security policies, input validation at multiple layers, and regular security audits of third-party components. The vulnerability's relationship to CVE-2013-1463 suggests that both may represent the same underlying issue, potentially warranting coordinated remediation efforts across affected systems. Organizations should also consider implementing web application firewalls and monitoring systems to detect and prevent exploitation attempts, while ensuring that all Flash-based components are regularly updated and maintained to prevent similar vulnerabilities from emerging in the future.