Cve20207796 — Zimbra Collaboration Suite Full Verified

The flaw resides in how the servlet validates (or fails to validate) the file parameter. In a typical request:

This article provides a comprehensive overview of the vulnerability, its impact, technical details, and remediation steps. What is CVE-2020-7796? Server-Side Request Forgery (SSRF) CVE Identifier: CVE-2020-7796 Affected Product: Zimbra Collaboration Suite (ZCS) Affected Versions: Versions prior to 8.8.15 Patch 7 CVSS Score: 9.8 (Critical)

Zimbra Collaboration Suite (ZCS) < 8.8.15 Patch 7 Vector: Network (Remote) Attack Complexity: Low Privileges Required: None (Unauthenticated) Technical Analysis: How the Attack Works cve20207796 zimbra collaboration suite full

Attackers can scan internal networks that are not exposed to the public internet, mapping services and identifying further vulnerabilities.

Review your Zimbra access logs for unusual file names or suspicious activity in the Drive module. Look for common XSS patterns like , onerror , or javascript: . The flaw resides in how the servlet validates

Accessing sensitive internal resources protected by firewalls. Data leakage or credential theft.

Update the repository metadata: yum clean metadata && yum check-update Update your system: yum update Restart ZCS: su - zimbra -c "zmcontrol restart" 2. Manual Workaround or javascript: .

: Zimbra Collaboration Suite versions prior to 8.8.15 Patch 7

The fix involved: