synacor zimbra-collaboration-suite CVE-2019-9670 is a vulnerability in Synacor Zimbra Collaboration Suite
Published on May 29, 2019

mailboxd component in Synacor Zimbra Collaboration Suite 8.7.x before 8.7.11p10 has an XML External Entity injection (XXE) vulnerability, as demonstrated by Autodiscover/Autodiscover.xml.

Vendor Advisory NVD

Known Exploited Vulnerability

This Synacor Zimbra Collaboration Suite Improper Restriction of XML External Entity Reference vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Improper Restriction of XML External Entity Reference vulnerability affecting Synacor Zimbra Collaboration Suite.

The following remediation steps are recommended / required by July 10, 2022: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2019-9670 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. It has the highest possible exploitability rating (3.9). The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.

What is a XXE Vulnerability?

The software processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

CVE-2019-9670 has been classified to as a XXE vulnerability or weakness.


Products Associated with CVE-2019-9670

You can be notified by stack.watch whenever vulnerabilities like CVE-2019-9670 are published in these products:

Synacor Zimbra Collaboration Suite
 

What versions of Zimbra Collaboration Suite are vulnerable to CVE-2019-9670?