FreeBSD : py-cryptography -- vulnerable HKDF key generation (e5dcb942-ba6f-11e6-b1cf-14dae9d210b8)

This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing one or more security-related
updates.

Description :

Alex Gaynor reports :

Fixed a bug where ``HKDF`` would return an empty byte-string if used
with a ``length`` less than ``algorithm.digest_size``.

See also :

http://www.nessus.org/u?36c7f8c3
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=214915
http://www.nessus.org/u?f5b429bf

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N)

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 95515 ()

Bugtraq ID:

CVE ID: CVE-2016-9243

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