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Status published
Medium
CVE-2016-6329
OpenVPN, when using a 64-bit block cipher, makes it easier...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://sweet32.info/
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05369403
- http://www.securitytracker.com/id/1036695
- http://www-01.ibm.com/support/docview.wss?uid=swg21995039
- http://www-01.ibm.com/support/docview.wss?uid=swg21991482
- https://security.gentoo.org/glsa/201611-02
- https://community.openvpn.net/openvpn/wiki/SWEET32
- http://www-01.ibm.com/support/docview.wss?uid=nas8N1021697
- http://www.securityfocus.com/bid/92631
- https://cert-portal.siemens.com/productcert/pdf/ssa-556833.pdf
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Affected Vendor
openvpn
View all reports →Affected Software
openvpn
Vulnerable Versions:
0
Timeline
Official Publish:
January 31st, 2017
Last Modified:
August 6th, 2024
Added to House:
July 20th, 2026
CVSS Vectors
V3:
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.