A Paramiko security update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, and 21.10.
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Ubuntu Security Notice USN-5351-1
March 28, 2022
paramiko vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 21.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Paramiko would allow unintended access to private key files.
Software Description:
- paramiko: Python SSH2 library
Details:
Jan Schejbal discovered that Paramiko incorrectly handled permissions when
writing private key files. A local attacker could possibly use this issue
to gain access to private keys.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 21.10:
python3-paramiko 2.7.2-1ubuntu1.1
Ubuntu 20.04 LTS:
python3-paramiko 2.6.0-2ubuntu0.1
Ubuntu 18.04 LTS:
python-paramiko 2.0.0-1ubuntu1.3
python3-paramiko 2.0.0-1ubuntu1.3
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5351-1
CVE-2022-24302
Package Information:
https://launchpad.net/ubuntu/+source/paramiko/2.7.2-1ubuntu1.1
https://launchpad.net/ubuntu/+source/paramiko/2.6.0-2ubuntu0.1
https://launchpad.net/ubuntu/+source/paramiko/2.0.0-1ubuntu1.3
