CVE-2021-35209
Estado: ModificadaCrítica (9.8)—
Se ha detectado un problema en el archivo ProxyServlet.java en el servlet /proxy en Zimbra Collaboration Suite versiones 8.8 anteriores a 8.8.15 Patch 23 y versiones 9.x anteriores a 9.0.0 Patch 16. El valor de la cabecera X-Host sobrescribe el valor de la cabecera Host en las peticiones proxy. El valor de la cabecera X-Host no es comprobado con la lista blanca de hosts a los que Zimbra tiene permitido hacer proxy (la configuración zimbraProxyAllowedDomains)
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 9.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 3.00%
- Percentil entre todas las CVEs puntuadas: 87
- Fecha de la puntuación: 8/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-918
Referencias
- https://blog.sonarsource.com/zimbra-webmail-compromise-via-email
- https://wiki.zimbra.com/wiki/Security_Center
- https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P23
- https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P16
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
- https://blog.sonarsource.com/zimbra-webmail-compromise-via-email
- https://wiki.zimbra.com/wiki/Security_Center
- https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P23
- https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P16
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
JSON original (NVD)
Mostrar
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