CVE-2021-35209

CRITICAL

9.8

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).

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published7/2/2021

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

zimbra:collaboration

Weaknesses (CWE)

CWE-918

References

https://blog.sonarsource.com/zimbra-webmail-compromise-via-email(cve@mitre.org)

https://wiki.zimbra.com/wiki/Security_Center(cve@mitre.org)

https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P23(cve@mitre.org)

https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P16(cve@mitre.org)

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories(cve@mitre.org)

https://blog.sonarsource.com/zimbra-webmail-compromise-via-email(af854a3a-2127-422b-91ae-364da2661108)

https://wiki.zimbra.com/wiki/Security_Center(af854a3a-2127-422b-91ae-364da2661108)

https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P23(af854a3a-2127-422b-91ae-364da2661108)

https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P16(af854a3a-2127-422b-91ae-364da2661108)

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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