The flaw stems from insufficient input validation within a specific application component in the Zimbra platform. When a platform fails to sanitize user-supplied URLs, it allows an attacker to abuse the server as a proxy to make unintended outbound requests.
POST /service/extension/UserServlet HTTP/1.1 Host: target.zimbra.com Content-Type: application/x-www-form-urlencoded cve20207796 zimbra collaboration suite full
This article provides a comprehensive, in-depth analysis of this critical flaw. We will dissect its technical workings, assess its real-world impact, and provide a definitive guide for detection, mitigation, and remediation. By the end, you will have a complete understanding of this high-stakes vulnerability and the necessary steps to protect your infrastructure. The flaw stems from insufficient input validation within
The weakness lies in the implementation of the integration in Zimbra versions prior to 8.8.15 Patch 7 . Zimlets are add-on components that extend the capabilities of the Zimbra web client. When the WebEx Zimlet is installed and its respective JavaServer Pages (JSP) configuration is enabled, a specific endpoint fails to perform sufficient input validation on user-supplied URLs. We will dissect its technical workings, assess its
Security teams can assess their exposure using automated vulnerability scanners and log analytics tools. 1. Automated Scanning with Nuclei