[USN-3885-1] OpenSSH vulnerabilities

[Marc Deslauriers]

==========================================================================
Ubuntu Security Notice USN-3885-1
February 07, 2019

openssh vulnerabilities
==========================================================================

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

- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in OpenSSH.

Software Description:
- openssh: secure shell (SSH) for secure access to remote machines

Details:

Harry Sintonen discovered multiple issues in the OpenSSH scp utility. If a
user or automated system were tricked into connecting to an untrusted
server, a remote attacker could possibly use these issues to write to
arbitrary files, change directory permissions, and spoof client output.

Update instructions:

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

Ubuntu 18.10:
  openssh-client                  1:7.7p1-4ubuntu0.2

Ubuntu 18.04 LTS:
  openssh-client                  1:7.6p1-4ubuntu0.2

Ubuntu 16.04 LTS:
  openssh-client                  1:7.2p2-4ubuntu2.7

Ubuntu 14.04 LTS:
  openssh-client                  1:6.6p1-2ubuntu2.12

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

References:
  https://usn.ubuntu.com/usn/usn-3885-1
  CVE-2018-20685, CVE-2019-6109, CVE-2019-6111

Package Information:
  https://launchpad.net/ubuntu/+source/openssh/1:7.7p1-4ubuntu0.2
  https://launchpad.net/ubuntu/+source/openssh/1:7.6p1-4ubuntu0.2
  https://launchpad.net/ubuntu/+source/openssh/1:7.2p2-4ubuntu2.7
  https://launchpad.net/ubuntu/+source/openssh/1:6.6p1-2ubuntu2.12

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