Ubuntu 16.04 LTS / 16.10 : python-cryptography vulnerability (USN-3138-1)

Ubuntu Security Notice (C) 2016-2017 Canonical, Inc. / NASL script (C) 2016-2017 Tenable Network Security, Inc.

Synopsis :

The remote Ubuntu host is missing one or more security-related

Description :

Markus Doring discovered that python-cryptography incorrectly handled
certain HKDF lengths. This could result in python-cryptography
returning an empty string instead of the expected derived key.

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected python-cryptography and / or python3-cryptography

Risk factor :

Medium / CVSS Base Score : 5.0
CVSS Temporal Score : 3.9
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 95385 ()

Bugtraq ID:

CVE ID: CVE-2016-9243

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