CVE-2016-6329

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.

Score

CVSS 3.0 5.9 Medium

Status

Modified - secalert@redhat.com

Published

2017-01-31

Last modified

2024-08-06

Weaknesses

CWE-200, CWE-310

Affected products

• Openvpn (Openvpn)

References

• http://www-01.ibm.com/support/docview.wss?uid=nas8N1021697
• http://www-01.ibm.com/support/docview.wss?uid=swg21991482
• http://www-01.ibm.com/support/docview.wss?uid=swg21995039
• http://www.securityfocus.com/bid/92631
• http://www.securitytracker.com/id/1036695
• https://cert-portal.siemens.com/productcert/pdf/ssa-556833.pdf
• https://community.openvpn.net/openvpn/wiki/SWEET32
• https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05369403
• https://security.gentoo.org/glsa/201611-02
• https://sweet32.info/