CVE-2016-3403

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-05-17 · updated 2026-06-17
Weakness: CWE-352

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.

Affected products

Zimbra Collaboration: through 8.6.0

References

http://seclists.org/fulldisclosure/2017/Jan/30
http://www.securityfocus.com/bid/95383
https://bugzilla.zimbra.com/show_bug.cgi?id=100885
https://bugzilla.zimbra.com/show_bug.cgi?id=100899
https://sysdream.com/news/lab/2017-01-12-cve-2016-3403-multiple-csrf-in-zimbra-administration-interface/
https://wiki.zimbra.com/wiki/Zimbra_Releases/8.6_Patch_8
https://wiki.zimbra.com/wiki/Zimbra_Releases/8.7.0
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
http://seclists.org/fulldisclosure/2017/Jan/30
http://www.securityfocus.com/bid/95383
https://bugzilla.zimbra.com/show_bug.cgi?id=100885
https://bugzilla.zimbra.com/show_bug.cgi?id=100899

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