1. Ubuntu Security Notices
  2. USN-4478-2

USN-4478-2: Python-RSA vulnerability

Publication date

21 February 2022

Overview

Python-RSA could be made to expose sensitive information over the network.

Releases

Packages

  • python-rsa - Pure-Python RSA implementation (Python 2)

Details

USN-4478-1 fixed a vulnerability in Python-RSA.
This update provides the corresponding update for Ubuntu 16.04 ESM,
Ubuntu 18.04 ESM and Ubuntu 20.04 ESM.

Original advisory details:

It was discovered that Python-RSA incorrectly handled certain ciphertexts.
An attacker could possibly use this issue to obtain sensitive information.

USN-4478-1 fixed a vulnerability in Python-RSA.
This update provides the corresponding update for Ubuntu 16.04 ESM,
Ubuntu 18.04 ESM and Ubuntu 20.04 ESM.

Original advisory details:

It was discovered that Python-RSA incorrectly handled certain ciphertexts.
An attacker could possibly use this issue to obtain sensitive information.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
20.04 focal python3-rsa –  4.0-3ubuntu0.1~esm1  
18.04 bionic python-rsa –  3.4.2-1ubuntu0.1~esm1  
python3-rsa –  3.4.2-1ubuntu0.1~esm1  
16.04 xenial python-rsa –  3.2.3-1.1ubuntu0.1~esm1  
python3-rsa –  3.2.3-1.1ubuntu0.1~esm1  

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References

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