CVE-2016-6329

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.

Category

5.9
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 8.39% Top 10%
Vendor Advisory gentoo.org Vendor Advisory openvpn.net
Affected: n/a n/a
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2016-6329?
CVE-2016-6329 has been scored as a medium severity vulnerability.
How to fix CVE-2016-6329?
To fix CVE-2016-6329, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-6329 being actively exploited in the wild?
It is possible that CVE-2016-6329 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~8% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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