CVE-2019-9670: Synacor Zimbra Collaboration (ZCS) Improper Restriction of XML External Entity Reference
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.
Other sources
Synacor Zimbra Collaboration Suite (ZCS) contains an improper restriction of XML external entity (XXE) vulnerability in the mailboxd component.
— CISA
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Synacor Zimbra Collaboration Suite (mailboxd)to a version that resolves this vulnerability.Fixed in 8.7.11p10
Event History
Frequently Asked Questions
What is CVE-2019-9670?
CVE-2019-9670 is a vulnerability in Synacor Zimbra Collaboration Suite.
How severe is CVE-2019-9670?
CVE-2019-9670 is considered critical with a severity rating of 9.8.
Is my version of Synacor Zimbra Collaboration Suite affected by CVE-2019-9670?
If you have version 8.7.x before 8.7.11p10 of Synacor Zimbra Collaboration Suite, you may be affected by CVE-2019-9670.
How can I fix CVE-2019-9670?
Upgrade to version 8.7.11p10 or newer of Synacor Zimbra Collaboration Suite to fix CVE-2019-9670.
Where can I find more information about CVE-2019-9670?
You can find more information about CVE-2019-9670 at the following references: [Reference 1](http://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.html), [Reference 2](http://www.rapid7.com/db/modules/exploit/linux/http/zimbra_xxe_rce), [Reference 3](https://bugzilla.zimbra.com/show_bug.cgi?id=109129).