SB2020021017 - Multiple vulnerabilities in Zimbra Collaboration

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Main Vulnerability Database SB2020021017

SB2020021017 - Multiple vulnerabilities in Zimbra Collaboration

Published: February 10, 2020 Updated: March 14, 2025

Security Bulletin ID SB2020021017
Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

High 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Improper Preservation of Permissions (CVE-ID: CVE-2020-8633)

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to incorrect revocation of a shared calendar in Outlook. A remote user can access the calendar after it was revoked.


2) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2020-7796)

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input in WebEx zimlet. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.


Remediation

Install update from vendor's website.

References