Ubuntu Security Notice 3796-1 - 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.
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Ubuntu Security Notice USN-3796-1
October 17, 2018
paramiko vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
Paramiko could allow unintended access to network services.
Software Description:
- paramiko: Python SSH2 library
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 18.04 LTS:
python-paramiko 2.0.0-1ubuntu1.1
python3-paramiko 2.0.0-1ubuntu1.1
Ubuntu 16.04 LTS:
python-paramiko 1.16.0-1ubuntu0.2
python3-paramiko 1.16.0-1ubuntu0.2
Ubuntu 14.04 LTS:
python-paramiko 1.10.1-1git1ubuntu0.2
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3796-1
CVE-2018-1000805
Package Information:
https://launchpad.net/ubuntu/+source/paramiko/2.0.0-1ubuntu1.1
https://launchpad.net/ubuntu/+source/paramiko/1.16.0-1ubuntu0.2
https://launchpad.net/ubuntu/+source/paramiko/1.10.1-1git1ubuntu0.2