National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-6329 Detail

Current Description

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.

Source:  MITRE
Description Last Modified:  01/31/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.9 MEDIUM
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 2.2


Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/92631 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1036695 Third Party Advisory VDB Entry
http://www-01.ibm.com/support/docview.wss?uid=nas8N1021697 Permissions Required Third Party Advisory
http://www-01.ibm.com/support/docview.wss?uid=swg21991482 Third Party Advisory
http://www-01.ibm.com/support/docview.wss?uid=swg21995039 Third Party Advisory
https://community.openvpn.net/openvpn/wiki/SWEET32 Vendor Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05369403 Third Party Advisory
https://security.gentoo.org/glsa/201611-02 Third Party Advisory
https://sweet32.info/ Technical Description Third Party Advisory

Technical Details

Vulnerability Type (View All)

  • Information Leak / Disclosure (CWE-200)
  • Cryptographic Issues (CWE-310)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2.3.14


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-6329
NVD Published Date:
01/31/2017
NVD Last Modified:
02/28/2017