[USN-4160-1] UW IMAP vulnerability

[Eduardo Barretto]

==========================================================================
Ubuntu Security Notice USN-4160-1
October 21, 2019

uw-imap vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

UW IMAP could be made to execute programs if it received specially crafted
input.

Software Description:
- uw-imap: c-client library for mail protocols - library files

Details:

It was discovered that UW IMAP incorrectly handled inputs. A remote attacker
could possibly use this issue to execute arbitrary OS commands.

Update instructions:

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

Ubuntu 19.04:
  libc-client2007e                8:2007f~dfsg-5ubuntu0.19.04.2
  mlock                           8:2007f~dfsg-5ubuntu0.19.04.2
  uw-mailutils                    8:2007f~dfsg-5ubuntu0.19.04.2

Ubuntu 18.04 LTS:
  libc-client2007e                8:2007f~dfsg-5ubuntu0.18.04.2
  mlock                           8:2007f~dfsg-5ubuntu0.18.04.2
  uw-mailutils                    8:2007f~dfsg-5ubuntu0.18.04.2

Ubuntu 16.04 LTS:
  libc-client2007e                8:2007f~dfsg-4+deb8u1build0.16.04.1
  mlock                           8:2007f~dfsg-4+deb8u1build0.16.04.1
  uw-mailutils                    8:2007f~dfsg-4+deb8u1build0.16.04.1

In general, a standard system update will make all the necessary changes.

References:
  https://usn.ubuntu.com/4160-1
  CVE-2018-19518

Package Information:
  https://launchpad.net/ubuntu/+source/uw-imap/8:2007f~dfsg-5ubuntu0.19.04.2
  https://launchpad.net/ubuntu/+source/uw-imap/8:2007f~dfsg-5ubuntu0.18.04.2
  
https://launchpad.net/ubuntu/+source/uw-imap/8:2007f~dfsg-4+deb8u1build0.16.04.1
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