CVE-2007-6637 in Flash Player
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Adobe Flash Player allow remote attackers to inject arbitrary web script or HTML via a crafted SWF file, related to "pre-generated SWF files" and Adobe Dreamweaver CS3 or Adobe Acrobat Connect. NOTE: the asfunction: vector is already covered by CVE-2007-6244.1.
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Analysis
by VulDB Data Team • 08/04/2019
The vulnerability described in CVE-2007-6637 represents a critical cross-site scripting flaw within Adobe Flash Player that enables remote attackers to execute malicious code through specially crafted SWF files. This vulnerability specifically targets the handling of pre-generated SWF files in conjunction with Adobe Dreamweaver CS3 and Adobe Acrobat Connect environments, creating a significant attack surface for malicious actors seeking to compromise user systems. The flaw exploits the way Flash Player processes and renders SWF content, allowing attackers to inject arbitrary web scripts or HTML code that executes within the context of a user's browser session.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization within the Flash Player runtime environment. When Flash Player encounters a crafted SWF file containing malicious code, it fails to properly filter or escape special characters that could be interpreted as executable script commands. This processing gap occurs during the parsing of pre-generated SWF files, which are typically created by development tools like Dreamweaver CS3 and Acrobat Connect. The vulnerability specifically manifests when these tools generate SWF files that contain embedded JavaScript or HTML content that bypasses Flash Player's security mechanisms, creating an execution path for malicious payloads.
The operational impact of this vulnerability extends beyond simple script injection, as it can lead to complete session hijacking, data theft, and unauthorized access to user accounts. Attackers can leverage this flaw to execute persistent malicious code that monitors user activities, captures keystrokes, steals cookies, and performs actions on behalf of authenticated users. The attack vector is particularly concerning because it can be delivered through legitimate software development tools, making it difficult for users to distinguish between benign and malicious content. Users who visit compromised websites or open malicious SWF files generated by Dreamweaver CS3 or Acrobat Connect are at risk of having their sessions compromised and sensitive data exposed.
Organizations and users affected by this vulnerability should implement immediate mitigations including disabling Flash Player plugins in web browsers, updating to patched versions of Adobe Flash Player, and implementing strict content filtering policies for SWF file downloads. Security professionals should also consider deploying web application firewalls and monitoring for suspicious SWF file activity, particularly those generated by Dreamweaver CS3 or Acrobat Connect. The vulnerability aligns with CWE-79, which addresses cross-site scripting flaws in web applications, and maps to ATT&CK technique T1059.007 for scripting languages, specifically targeting the execution of malicious code through web-based attack vectors. Additional defensive measures should include user education about the risks of executing SWF files from untrusted sources and implementing sandboxing mechanisms to limit the potential damage from successful exploitation attempts.