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Cryptographic Issues Affecting openvpn package, versions <2.3.10-1ubuntu2.1

Severity

 Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.39% (73rd percentile)

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  • Snyk IDSNYK-UBUNTU1604-OPENVPN-345118
  • published31 Jan 2017
  • disclosed31 Jan 2017
Report a new vulnerability Found a mistake?

Introduced: 31 Jan 2017

CVE-2016-6329  (opens in a new tab)
CWE-310  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 openvpn to version 2.3.10-1ubuntu2.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openvpn package and not the openvpn package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

OpenVPN, when using a 64-bit block cipher, makes it easier for remote attackers to obtain cleartext data via a birthday attack against a long-duration encrypted session, as demonstrated by an HTTP-over-OpenVPN session using Blowfish in CBC mode, aka a "Sweet32" attack.