slawkens MyAAC bugtracker.php cross site scripting

Successful exploitation of CVE-2023-7076 allows an attacker to execute arbitrary JavaScript code within the context of a user's browser session. This can lead to a variety of malicious outcomes, including stealing user credentials, redirecting users to phishing sites, or modifying the content of the web page. The impact is amplified if the application handles sensitive data or is integrated with other systems. An attacker could potentially gain access to user accounts and perform actions on their behalf, leading to data breaches and reputational damage. While the CVSS score is LOW, the ease of exploitation and potential impact on user data warrant immediate attention.

Organizations using MyAAC for bug tracking or issue reporting are at risk. Specifically, deployments running versions 0.8.0 through 0.8.13 are vulnerable. Shared hosting environments where MyAAC is installed alongside other applications may also be affected, as a successful XSS attack could potentially compromise other tenants on the same server.

• generic web: Use curl to test the bug report form endpoint with a simple XSS payload (e.g., curl 'http://your-myaac-instance/pages/bugtracker.php?bug[2][subject]=<script>alert(1)</script>'). Inspect the response for the presence of the alert box. • generic web: Examine access and error logs for suspicious requests containing XSS payloads targeting the bug[2][subject], bug[2][text], or report[subject] parameters. • php: Review the source code of pages/bugtracker.php for inadequate input validation or output encoding of these parameters.

1. 2023-12-22Disclosure

   disclosure

2. 2023-12-22Patch

   patch

1. Gereserveerd2023-12-22
2. Gepubliceerd2023-12-22
3. Gewijzigd2024-11-21
4. EPSS bijgewerkt2026-04-02

The primary mitigation for CVE-2023-7076 is to upgrade MyAAC to version 0.8.14 or later, which includes the necessary fix. If upgrading is not immediately feasible, consider implementing input validation and output encoding on the bugtracker.php page to sanitize user-supplied data. Web application firewalls (WAFs) can be configured to detect and block malicious XSS payloads targeting the vulnerable parameters. Review and harden the application's security configuration to minimize the attack surface. After upgrading, confirm the fix by attempting to inject a simple XSS payload (e.g., <script>alert(1)</script>) into the bug report form and verifying that it is properly neutralized.