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CVE-2021-35209
Published: Jul 2, 2021
Modified: Aug 4, 2024
PUBLISHED
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).
| Vendor | Product | Versions |
|---|---|---|
n/a | n/a | affected n/a |
References
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
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https://wiki.zimbra.com/wiki/Security_Center
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https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P16
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https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P23
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https://blog.sonarsource.com/zimbra-webmail-compromise-via-email
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