USN-4613-1: python-cryptography vulnerability

Releases

• Ubuntu 20.10
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• python-cryptography - Cryptography Python library

Details

Hubert Kario discovered that python-cryptography incorrectly handled certain decryption.
An attacker could possibly use this issue to expose sensitive information.

Update instructions

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

Ubuntu 20.10

• python3-cryptography - 3.0-1ubuntu0.1

Ubuntu 20.04

• python-cryptography - 2.8-3ubuntu0.1
• python3-cryptography - 2.8-3ubuntu0.1

Ubuntu 18.04

• python-cryptography - 2.1.4-1ubuntu1.4
• python3-cryptography - 2.1.4-1ubuntu1.4

Ubuntu 16.04

• python-cryptography - 1.2.3-1ubuntu0.3
• python3-cryptography - 1.2.3-1ubuntu0.3

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

References

• CVE-2020-25659