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    CVE-2016-3403

    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.

    Published:May 17, 2017
    Last Modified:Apr 20, 2025
    EPS:May 17, 2017
    EPSS Score:0.02566
    CVSS Score:8.8

    Affected Products

    Vendor
    Synacor
    Product
    Zimbra Collaboration Suite

    Exploits

    http://seclists.org/fulldisclosure/2017/Jan/30https://sysdream.com/news/lab/2017-01-12-cve-2016-3403-multiple-csrf-in-zimbra-administration-interface/http://seclists.org/fulldisclosure/2017/Jan/30https://sysdream.com/news/lab/2017-01-12-cve-2016-3403-multiple-csrf-in-zimbra-administration-interface/

    Related CVEs

    CVE-2026-73576 (CVSS 6.3) — In Zimbra Collaboration (ZCS) before 10.1.17, weak cryptographic key generation vulnerability exists in the On…
    CVE-2026-73575 (CVSS 3.1) — In Zimbra Collaboration (ZCS) before 10.1.17, a Cross-Site Request Forgery (CSRF) vulnerability exists in the …
    CVE-2026-73574 (CVSS 3.1) — In Zimbra Collaboration before 10.1.17, a local file inclusion (LFI) vulnerability exists in the Zimbra Classi…
    CVE-2026-73573 (CVSS 3.1) — In Zimbra Collaboration (ZCS) before 10.1.17, a path traversal vulnerability exists in the Zimbra Briefcase do…
    CVE-2026-73572 (CVSS 6.1) — In Zimbra Collaboration (ZCS) before 10.1.17, a stored cross-site scripting (XSS) vulnerability exists in the …
    CVE-2026-73571 (CVSS 3.1) — An authorization bypass vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.17 due to improper auth…
    CVE-2026-73570 (CVSS 8.9) — A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when the optional zi…
    CVE-2026-33373 (CVSS 8.8) — An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A Cross-Site Request Forgery (CSRF) vulne…
    CVE-2026-33372 (CVSS 5.4) — An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A cross-site request forgery (CSRF) vulne…
    CVE-2026-33370 (CVSS 6.1) — An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A stored cross-site scripting (XSS) vulne…

    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
    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High