Zimbra Releases/8.6.0/P9

Zimbra Collaboration 8.6.0 Patch 9 GA Release

Check out the "Fixed Issues" and "Security Fixes" for this version of Zimbra Collaboration below. As always, you’re encouraged to tell us what you think in the Forums, or file a bug in Bugzilla.

Fixed Issues (Bugzilla query)

101227 CPU load & latency when open mail with data:image/png:base64 inline image
104365 Update timezones.ics to tzdata2017b
97710 Tasks causing slowness from ZWC and consuming CPU resources
103797 Description of a previous appointment comes up when changing mode from plain-text to html
107289 Printing work week shows wrong time
107288 EWS caches and logs cleartext password
97460 Need visual cue and hyperlink for url links when composing message
100281 Deleted/canceled appts remain on calendar
101584 QuickAdd location using GAL is not saved correctly > only name is kept
107826 Implement GetStreamingEvents EWS API(Phase 1)
107499 EWS: Resolve Name should return all the contact information
97126 Script Error (this._sharesGroup is undefined) when click to "Edit Properties" folder menu
101023 zimbraHelpAdvancedURL, zimbraHelpStandardURL and zimbraHelpAdminURL does not work
107646 There is an unexpected logout for a session in the HTML client.
107925 Persistent XSS - snippet [CWE-79]
108265 Persistent XSS - message view as text [CWE-79]

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
107925 Persistent XSS CWE-79 CVE-2017-8802 3.5 Minor 8.6 P9, 8.8.3
108265 Persistent XSS CWE-79 CVE-2017-17703 3.5 Minor 8.6 P9, 8.8.3

Before Installing the Patch

Before installing the patch, consider the following:

  • Zimbra Collaboration patches can be found at https://www.zimbra.com/downloads/zimbracollaboration
  • 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 on all 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 Patch9 TGZ file

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

3. Install Zimbra Collaboration 8.6.0 Patch9

  • 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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