Cve20207796 Zimbra Collaboration Suite Full [better] 〈FULL〉

Check /opt/zimbra/log/access_log for suspicious UserServlet or ProxyServlet requests containing:

The root cause of this vulnerability is a failure by Zimbra to properly validate user-supplied input in a specific JSP file ( httpPost.jsp ) within the WebEx zimlet.

If you are running a Zimbra Collaboration Suite, it is highly recommended to and apply the latest patches to prevent potential security breaches related to this vulnerability. Share public link

Understanding CVE-2020-7796 in Zimbra Collaboration Suite: A Full Technical Breakdown cve20207796 zimbra collaboration suite full

Attackers can bypass firewalls to access sensitive internal resources or metadata services.

Understanding CVE-2020-7796: Zimbra Collaboration Suite SSRF Vulnerability

Given the severity and active exploitation, immediate action is critical. The following steps provide a roadmap for securing your Zimbra installation. Since the flaw resides in this specific component,

is a Server-Side Request Forgery (SSRF) vulnerability found in the Zimbra Collaboration Suite (ZCS) , specifically affecting versions prior to 8.8.15 Patch 7 .

Since the flaw resides in this specific component, disabling it or its JSP functionality can block the attack vector.

In an SSRF attack, an unauthenticated remote attacker can force the vulnerable Zimbra server to make HTTP requests to arbitrary internal or external hosts. Internal Proxying a senior security analyst.

Upgrade to Zimbra Collaboration 8.8.15 Patch 7 or later . This version contains the necessary security fixes for this SSRF flaw.

The attacker first checks if the target Zimbra server is vulnerable by sending a benign request to the proxy endpoint and examining the response headers or error messages.

Maya, a senior security analyst. She’s reviewing a routine vulnerability scan report from the previous night.

The fix involved:

: Apply Zimbra Collaboration 8.8.15 Patch 7 or higher.