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Ubuntu Security Notice USN-3796-2
October 17, 2018

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

- Ubuntu 12.04 ESM

Summary:

Paramiko could allow unintended access to network services.

Software Description:
- paramiko: Python SSH2 library

Details:

USN-3796-1 fixed a vulnerability in paramiko. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 Daniel Hoffman discovered that Paramiko incorrectly handled
 authentication when being used as a server. A remote attacker could
 use this issue to bypass authentication without any credentials.

Update instructions:

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

Ubuntu 12.04 ESM:
  python-paramiko                 1.7.7.1-2ubuntu1.2

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
  https://usn.ubuntu.com/usn/usn-3796-2
  https://usn.ubuntu.com/usn/usn-3796-1
  CVE-2018-1000805