Sunday, July 4, 2021

CVE-2021-35209

Description

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).

References to Advisories, Solutions, and Tools


References to Advisories, Solutions, and Tools

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Resourcehttps://wiki.zimbra.com/wiki/Security_Centerhttps://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P23https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P16https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
 

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Thanks for everything Templateism - You should have written the code a little more complicated