Zimbra Releases/8.6.0/P14

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Zimbra Collaboration 8.6.0 Patch 14 GA Release

Check out the "Security Fixes" for this version of Zimbra Collaboration below. Please refer "Patch Installation" section for Patch Installation instructions. As always, you’re encouraged to tell us what you think in the Forum, or open a support ticket.

Security Fixes

Information about security fixes, security response policy and vulnerability rating classification are listed below. See the Zimbra Security Response Policy and the Zimbra Vulnerability Rating Classification information below for details.

Bug# Summary CVE-ID CVSS
Fix Release or
Patch Version
109097 Insecure object deserialization - IMAP [CWE-502] CVE-2019-6980 5.4 Major 8.6.0 Patch14
109096 Blind SSRF vulnerability - Feed [CWE-918] CVE-2019-6981 4.0 Minor 8.6.0 Patch14
109127 SSRF vulnerability - ProxyServlet [CWE-918 / CWE-807] CVE-2019-9621 4.0 Minor 8.6.0 Patch14

Before Installing the Patch

Before installing the patch, consider the following:

  • Zimbra Collaboration patches can be found at https://www.zimbra.com/downloads/zimbra-collaboration
  • Patches are cumulative, and delivered as a TGZ file.
  • A full backup should be performed before any patch is applied. There is no automated roll-back.
  • Zimlet patches can include removing existing Zimlets and redeploying the patched Zimlet.
  • Only files or Zimlets associated with installed packages will be installed from the patch.
  • Switch to user zimbra before using ZCS CLI commands.
  • Important! You cannot revert to the previous ZCS release after you upgrade to the patch.

Install the Patch

Note: This patch should be installed only on all mailbox nodes running in your environment.

1. Before you begin, confirm you have the following:

  • Zimbra Collaboration 8.6.0 GA installed
  • Zimbra Collaboration 8.6.0 Patch14 TGZ file

2. Copy the patch.tgz file(s) to your server.

3. Install Zimbra Collaboration 8.6.0 Patch14

  • a. Log in as root and cd to the directory where the tar file is saved. Type
tar xzf zcs-patch-8.6.0_GA_XXX.tgz
cd zcs-patch-8.6.0_GA_XX
  • b. As root, install the patch. Type
  • c. Switch to user zimbra
su – zimbra
  • d. ZCS must be restarted to changes to take effect. Type
zmcontrol restart

Note: For users who have the web-client open and are running the FOSS edition, the refresh notice mightstate that you have changed to the NETWORK Edition; however, your feature set will remain FOSS only.

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