CVE-2012-6369 in 1Password
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the Troubleshooting Reporting System feature in AgileBits 1Password 3.9.9 might allow remote attackers to inject arbitrary web script or HTML via a crafted User-Agent HTTP header that is not properly handled in a View Troubleshooting Report action.
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Analysis
by VulDB Data Team • 02/24/2019
The CVE-2012-6369 vulnerability represents a cross-site scripting flaw within the Troubleshooting Reporting System feature of AgileBits 1Password version 3.9.9. This vulnerability specifically manifests when the application fails to properly sanitize or escape user input from the User-Agent HTTP header during the View Troubleshooting Report action. The issue creates a potential attack vector where remote adversaries can craft malicious User-Agent strings containing embedded scripts that execute in the context of other users who view the troubleshooting report. This type of vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is classified as a critical security weakness in web applications. The vulnerability stems from improper input validation and output encoding practices, where the application assumes that all input from HTTP headers is safe without adequate sanitization measures.
The technical exploitation of this vulnerability requires an attacker to construct a specially crafted User-Agent HTTP header that contains malicious script code, typically in the form of javascript or html content. When a victim user accesses the troubleshooting report page, the application displays the User-Agent header content without proper sanitization, allowing the malicious script to execute in the victim's browser context. This creates a persistent XSS scenario where the attacker's code runs within the security context of the vulnerable application, potentially enabling session hijacking, credential theft, or redirection to malicious sites. The vulnerability is particularly concerning because it leverages HTTP headers, which are often considered less scrutinized than other input vectors, and the attack can be executed without requiring user interaction beyond viewing the report.
The operational impact of this vulnerability extends beyond simple script execution, as it can facilitate more sophisticated attacks within the context of the 1Password application. Attackers could potentially steal session cookies, modify application behavior, or redirect users to phishing sites that appear legitimate within the application interface. The vulnerability affects all users who have access to view troubleshooting reports, making it a significant risk for organizations that rely on 1Password for credential management. From an ATT&CK framework perspective, this vulnerability maps to T1566 (Phishing) and T1059 (Command and Scripting Interpreter) techniques, as it enables attackers to deliver malicious payloads through web-based vectors. The vulnerability also represents a failure in the principle of least privilege and input validation, as the application should not trust any user-provided data without proper sanitization.
Mitigation strategies for CVE-2012-6369 should focus on implementing proper input sanitization and output encoding for all HTTP header data, particularly the User-Agent field. Organizations should immediately upgrade to a patched version of 1Password, as AgileBits would have addressed this vulnerability in subsequent releases. The application should employ strict validation of all input data, including HTTP headers, and implement Content Security Policy headers to prevent unauthorized script execution. Additionally, security teams should conduct regular input validation testing and implement automated scanning tools to detect similar vulnerabilities in other web applications. The vulnerability also highlights the importance of secure coding practices and the need for comprehensive security testing that includes HTTP header validation as part of the application security lifecycle. Organizations should consider implementing web application firewalls and monitoring for suspicious User-Agent patterns as additional defensive measures against this class of vulnerability.