Name: CVE-2021-35209: Server-Side Request Forgery (SSRF)
Creator: Rapid7
Published: 2021-07-02T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2021-35209, CWE-918, CVSS 9.8, EPSS 0.0245

An issue was discovered in ProxyServlet.java in the /proxy servlet in Zimbra Collaboration Suite 8.8 before 8.8.15 Patch 23 and 9.x before 9.0.0 Patch 16. The value of the X-Host header overwrites the value of the Host header in proxied requests. The value of X-Host header is not checked against the whitelist of hosts Zimbra is allowed to proxy to (the zimbraProxyAllowedDomains setting).

CVSS Details

CVSS 3.1 Base Score: 9.8
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Zimbra Collaboration	—	Upgrade Zimbra Collaboration to the latest version	Jan 10, 2025	Jul 2, 2021

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CVSS Details

Covered by Rapid7

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