CVE-2022-41352: Remote Code Execution Vulnerability in Zimbra Collaboration Suite CVSS 3.0: 9.8 (Critical)

Vulnerability Description
An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0. An attacker can upload arbitrary files through amavisd via a cpio loophole (extraction to /opt/zimbra/jetty/webapps/zimbra/public) that can lead to incorrect access to any other user accounts. Zimbra recommends pax over cpio. Also, pax is in the prerequisites of Zimbra on Ubuntu; however, pax is no longer part of a default Red Hat installation after RHEL 6 (or CentOS 6). Once pax is installed, amavisd automatically prefers it over cpio.

Recommended Mitigations

  1. Zimbra released a patch for CVE-2022-41352 on October 10, 2022. The patched version is Zimbra Collaboration Suite 9.0.0 P27
  2. Zimbra has provided a workaround, which is to install the pax utility and restart the Zimbra services. Please check the reference URL:


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