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Ubuntu Security Notice USN-3998-1
May 30, 2019

evolution-data-server vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Evolution Data Server would sometimes display email content as encrypted
when it was not.

Software Description:
- evolution-data-server: Evolution suite data server

Details:

Marcus Brinkmann discovered that Evolution Data Server did not correctly
interpret the output from GPG when decrypting encrypted messages. Under
certain circumstances, this could result in displaying clear-text portions
of encrypted messages as though they were encrypted.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
  evolution-data-server           3.28.5-0ubuntu0.18.04.2
  evolution-data-server-common    3.28.5-0ubuntu0.18.04.2
  libcamel-1.2-61                 3.28.5-0ubuntu0.18.04.2
  libebackend-1.2-10              3.28.5-0ubuntu0.18.04.2
  libedataserver-1.2-23           3.28.5-0ubuntu0.18.04.2

Ubuntu 16.04 LTS:
  evolution-data-server           3.18.5-1ubuntu1.2
  evolution-data-server-common    3.18.5-1ubuntu1.2
  libcamel-1.2-54                 3.18.5-1ubuntu1.2
  libebackend-1.2-10              3.18.5-1ubuntu1.2
  libedataserver-1.2-21           3.18.5-1ubuntu1.2

After a standard system update you need to restart Evolution to make
all the necessary changes.

References:
  https://usn.ubuntu.com/usn/usn-3998-1
  CVE-2018-15587

Package Information:
  https://launchpad.net/ubuntu/+source/evolution-data-server/3.28.5-0ubuntu0.18.04.2
  https://launchpad.net/ubuntu/+source/evolution-data-server/3.18.5-1ubuntu1.2