CVE-2013-6074 in AppSuite
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Open-Xchange (OX) AppSuite 7.2.x before 7.2.2-rev25 and 7.4.x before 7.4.0-rev14 allows remote attackers to inject arbitrary web script or HTML via an attached SVG file.
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Analysis
by VulDB Data Team • 01/10/2022
The CVE-2013-6074 vulnerability represents a critical cross-site scripting flaw discovered in Open-Xchange AppSuite email and collaboration platform versions 7.2.x prior to 7.2.2-rev25 and 7.4.x prior to 7.4.0-rev14. This vulnerability specifically targets the platform's handling of SVG (Scalable Vector Graphics) file attachments, creating a pathway for remote attackers to execute malicious web scripts or HTML code within the context of users' browsers. The flaw resides in the application's insufficient input validation and sanitization mechanisms when processing SVG file attachments, which are commonly used for email graphics and documents.
The technical exploitation of this vulnerability occurs through the improper handling of SVG file content within the Open-Xchange platform's web interface. When users receive or view email messages containing malicious SVG attachments, the application fails to adequately sanitize the SVG markup before rendering it in the browser. This allows attackers to embed malicious JavaScript code within SVG files that executes when the attachment is viewed, bypassing typical security controls designed to prevent cross-site scripting attacks. The vulnerability is particularly concerning because SVG files are commonly used in email communications and are often automatically rendered by modern email clients, making the attack surface broad and easily exploitable.
From an operational impact perspective, this vulnerability creates significant risk for organizations using Open-Xchange AppSuite as their primary email and collaboration platform. Attackers can leverage this flaw to steal user session cookies, perform unauthorized actions on behalf of victims, redirect users to malicious websites, or even execute more sophisticated attacks such as credential harvesting or data exfiltration. The remote nature of the attack means that threat actors do not require physical access to target systems or insider knowledge of network configurations. The vulnerability particularly affects enterprise environments where email systems are central to business operations and where users frequently handle external email communications containing potentially malicious attachments.
Organizations should immediately implement mitigations including applying the vendor-provided patches and updates to upgrade to versions 7.2.2-rev25 or 7.4.0-rev14, which contain the necessary security fixes. Network-based protections such as web application firewalls should be configured to monitor and block suspicious SVG file content, while email security solutions should implement strict attachment filtering policies that either block SVG files entirely or subject them to enhanced sandboxing. Security teams should also consider implementing content security policies that restrict script execution within the email application's context, and conduct regular security awareness training to educate users about the risks of opening suspicious email attachments. This vulnerability aligns with CWE-79 (Cross-site Scripting) and maps to ATT&CK technique T1566.001 (Phishing: Spearphishing Attachment) in the adversary tactics framework, demonstrating how email-based attack vectors can leverage application-level vulnerabilities to achieve persistent access and data compromise within target environments.