CVE-2016-3403

Name: CVE-2016-3403
Creator: NVD / NIST
Published: 2017-05-17T14:29:00.29+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.36%

Last modified Jun 17, 2026

CVE-2016-3403 is a vulnerability of currently unknown severity. Multiple cross-site request forgery (CSRF) vulnerabilities in the Admin Console in Zimbra Collaboration before 8.6.0 Patch 8 allow remote attackers to hijack the authentication of administrators for requests that (1) add, (2) modify, or (3) remove accounts by leveraging failure to use of a CSRF token and perform referer header checks, aka bugs 100885 and 100899.. EPSS estimates a 1.36% chance of exploitation in the next 30 days.

Description

Multiple cross-site request forgery (CSRF) vulnerabilities in the Admin Console in Zimbra Collaboration before 8.6.0 Patch 8 allow remote attackers to hijack the authentication of administrators for requests that (1) add, (2) modify, or (3) remove accounts by leveraging failure to use of a CSRF token and perform referer header checks, aka bugs 100885 and 100899.

Metrics

EPSS Probability

1.36%

68.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Synacor	Zimbra Collaboration Suite	<= 8.6.0

References

http://seclists.org/fulldisclosure/2017/Jan/30Exploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/95383Third Party Advisory, VDB Entry
https://bugzilla.zimbra.com/show_bug.cgi?id=100885Issue Tracking
https://bugzilla.zimbra.com/show_bug.cgi?id=100899Issue Tracking
https://sysdream.com/news/lab/2017-01-12-cve-2016-3403-multiple-csrf-in-zimbra-administration-interface/Exploit, Third Party Advisory
https://wiki.zimbra.com/wiki/Zimbra_Releases/8.6_Patch_8Patch, Release Notes
https://wiki.zimbra.com/wiki/Zimbra_Releases/8.7.0Release Notes
https://wiki.zimbra.com/wiki/Zimbra_Security_AdvisoriesVendor Advisory
http://seclists.org/fulldisclosure/2017/Jan/30Exploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/95383Third Party Advisory, VDB Entry
https://bugzilla.zimbra.com/show_bug.cgi?id=100885Issue Tracking
https://bugzilla.zimbra.com/show_bug.cgi?id=100899Issue Tracking
https://sysdream.com/news/lab/2017-01-12-cve-2016-3403-multiple-csrf-in-zimbra-administration-interface/Exploit, Third Party Advisory
https://wiki.zimbra.com/wiki/Zimbra_Releases/8.6_Patch_8Patch, Release Notes
https://wiki.zimbra.com/wiki/Zimbra_Releases/8.7.0Release Notes
https://wiki.zimbra.com/wiki/Zimbra_Security_AdvisoriesVendor Advisory

Timeline

Published: May 17, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-3403?

How severe is CVE-2016-3403?

Severity scoring for CVE-2016-3403 is pending analysis. The EPSS model estimates a 1.36% probability of exploitation in the next 30 days.

How do I fix CVE-2016-3403?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-3403?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST