Zimbra Collaboration Daffodil 10.0.12 Patch Release

Release Date: December 17, 2024

Things to know before you upgrade

Important change for zimbraLowestSupportedAuthVersion

Zimbra has deprecated the support for "zimbraLowestSupportedAuthVersion < 2" globalconfig attribute. This change addresses the issue of authentication tokens being insecure when lower versions were allowed.

As a result, Zimbra now enforces "zimbraLowestSupportedAuthVersion = 2" as the minimum supported value. This change may impact in an increase in LDAP write operations for newly issued auth tokens, impacting LDAP performance, particularly in environments with a large user base where the globalconfig attribute zimbraLowestSupportedAuthVersion was set to 1.

Before performing patch upgrade, consider updating "zimbraLowestSupportedAuthVersion = 2" on each mailbox server in a staged manner, one at a time. Follow below guidelines for upgrade:

- Update zimbraLowestSupportedAuthVersion = 2 on mailbox server
  zmprov ms <mailbox server host> zimbraLowestSupportedAuthVersion 2

- Monitor LDAP server load utilisation and wait for LDAP resources to be stable

- Once LDAP utilisation is stable, proceed with next mailbox server

- After all mailbox servers are updated and LDAP utilisation is stable proceed for latest patch upgrade.

Changes to SOAP API

There are changes in ChangePassword SOAP API. Please refer to API reference documentation. If you have custom auth implementation with ChangePassword, please incorporate changes to support new API changes.

IMPORTANT: Admin Account authentication now honors zimbraAuthFallbackToLocal when using external/custom authentication. See: https://blog.zimbra.com/2024/04/admin-account-authentication-now-honors-zimbraauthfallbacktolocal/

Check out the Security Fixes sections for this version of Zimbra Collaboration. Please refer to the Patch Installation steps for Patch Installation instructions. As always, you are encouraged to tell us what you think in the Forums or open a support ticket to report issues.

IMPORTANT: Instructions to update Zimbra's onlyoffice repository for installing zimbra-onlyoffice package.

Please note that there is no change in the onlyoffice package. Add Zimbra's onlyoffice repository to the server before Zimbra Daffodil v10 installation/upgrade. These repos will be included bydefault in upcoming Zimbra Daffodil version.

https://repo.zimbra.com/apt/onlyoffice

https://repo.zimbra.com/rpm/onlyoffice

You must add your local repository to your RHEL/CentOS Configuration :

Redhat

RHEL7

$ cat > /etc/yum.repos.d/zimbra-onlyoffice.repo <<EOF
[zimbra-onlyoffice]
name=Zimbra Onlyoffice RPM Repository
baseurl=https://repo.zimbra.com/rpm/onlyoffice/rhel7
gpgcheck=1
enabled=1
EOF

RHEL8

$ cat > /etc/yum.repos.d/zimbra-onlyoffice.repo <<EOF
[zimbra-onlyoffice]
name=Zimbra Onlyoffice RPM Repository
baseurl=https://repo.zimbra.com/rpm/onlyoffice/rhel8
gpgcheck=1
enabled=1
EOF

rpm --import https://files.zimbra.com/downloads/security/public.key
yum --disablerepo=* --enablerepo=zimbra-onlyoffice clean metadata
yum check-update --disablerepo=* --enablerepo=zimbra-onlyoffice --noplugins

Ubuntu

UBUNTU18

$ cat > /etc/apt/sources.list.d/zimbra-onlyoffice.list << EOF
deb [arch=amd64] https://repo.zimbra.com/apt/onlyoffice bionic zimbra
deb-src [arch=amd64] https://repo.zimbra.com/apt/onlyoffice bionic zimbra
EOF

UBUNTU20

$ cat > /etc/apt/sources.list.d/zimbra-onlyoffice.list << EOF
deb [arch=amd64] https://repo.zimbra.com/apt/onlyoffice focal zimbra
deb-src [arch=amd64] https://repo.zimbra.com/apt/onlyoffice focal zimbra
EOF

apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 9BE6ED79
apt-get update

IMPORTANT: Incase above steps are missed for Onlyoffice installation, following is the manual steps for installation.

As root user run below commands: (assuming Zimbra is already installed)

$ wget -O /opt/zimbra/bin/zmonlyofficeinstall https://raw.githubusercontent.com/Zimbra/zm-core-utils/10.0.9/src/bin/zmonlyofficeinstall
$ chmod 755 /opt/zimbra/bin/zmonlyofficeinstall
$ /opt/zimbra/bin/zmonlyofficeinstall

IMPORTANT: Zimbra OpenSSL with default FIPS Configuration

Please be advised that, TLS 1.2 is the minimum supported version if FIPS is being used with OpenSSL 3.0. We recommend using Zimbra with strong TLS configuration for increased security. Please follow instructions in Cipher-suites-wiki to set correct ciphers as per current versions of openssl, nginx and postfix.
From this patch going forward Zimbra OpenSSL will be configured to work with FIPS compliance enabled by default. You do not need to take any action, unless you run into issues, you can switch to the non-FIPS provider as follows:

Run below commands to Enable/Disable FIPS providers on all servers.

Disable FIPS provider:

As root user run below commands

Take backup of openssl.cnf
cd /opt/zimbra/common/etc/ssl
cp openssl.cnf <backup-path>/openssl.cnf

Copy openssl-source.cnf file
cd /opt/zimbra/common/etc/ssl
cp openssl-source.cnf openssl.cnf

Verify that, FIPS provider is disabled:
Run below command and verify fips provider is not listed
/opt/zimbra/common/bin/openssl list --providers

As zimbra user run below commands
su - zimbra
zmcontrol restart

Enable FIPS provider:

As root user run below commands

Take backup of openssl.cnf
cd /opt/zimbra/common/etc/ssl
cp openssl.cnf <backup-path>/openssl.cnf

Copy openssl-fips.cnf file
cd /opt/zimbra/common/etc/ssl
cp openssl-fips.cnf openssl.cnf

Verify that, FIPS provider is enabled:
Run below command and verify fips provider is listed
/opt/zimbra/common/bin/openssl list --providers

As zimbra user run below commands
su - zimbra
zmcontrol restart

Security Fixes

Summary	CVE-ID	CVSS Score
An issue with encoded @import statements in <style> tags that allowed the loading of malicious CSS has been addressed.
SSRF vulnerability in the RSS feed parser that allowed unauthorized redirection to internal network endpoints has been resolved.
An SQL injection vulnerability in the ZimbraSyncService SOAP endpoint has been resolved.
A Cross-Site Scripting (XSS) vulnerability via crafted <img> HTML content in the Zimbra Classic UI has been fixed. LC attribute zimbra_owasp_strip_alt_tags_with_handlers introduced in previous patch is no longer required and has been removed.	CVE-2024-45516
A Cross-Site Scripting (XSS) vulnerability via crafted HTML content in the Zimbra Classic UI has been fixed. LC attribute zimbra_owasp_strip_alt_tags_with_handlers introduced in previous patch is no longer required and has been removed.
A vulnerability in the ChangePassword API has been fixed to require a valid auth token.

What's New

Zimbra Connector for Outlook

Enhanced logging by adding the following information - Outlook version, Outlook, and ZCO language selected by the user.
The install/upgrade history for the ZCO versions is now maintained.

Fixed Issues