Published: 31/01/2017 Updated: 09/07/2019

CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6

CVSS v3 Base Score: 5.9 | Impact Score: 3.6 | Exploitability Score: 2.2

VMScore: 388

Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N

OpenVPN, when using a 64-bit block cipher, makes it easier for remote malicious users 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.

Vulnerable Product	Search on Vulmon	Subscribe to Product
openvpn openvpn

Several security issues were fixed in OpenVPN ...

Ciphers with 64-bit block sizes used in CBC mode were found to be vulnerable to a birthday attack when key renegotiation doesn't happen frequently or at all in long running connections The blowfish cipher as used in OpenVPN by default is vulnerable to this attack, allowing a remote attacker to recover partial plaintext information (XOR of two plai ...

CWE-310 CWE-200 https://sweet32.info/https://security.gentoo.org/glsa/201611-02 https://community.openvpn.net/openvpn/wiki/SWEET32 http://www-01.ibm.com/support/docview.wss?uid=swg21995039 http://www-01.ibm.com/support/docview.wss?uid=swg21991482 http://www-01.ibm.com/support/docview.wss?uid=nas8N1021697 http://www.securitytracker.com/id/1036695 http://www.securityfocus.com/bid/92631 https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05369403 https://cert-portal.siemens.com/productcert/pdf/ssa-556833.pdf https://usn.ubuntu.com/3339-1/https://nvd.nist.gov

Get Started

Vulmon Search is a vulnerability search engine. It gives comprehensive vulnerability information through a very simple user interface.

Home Recent Vulnerabilities Research Posts Trends Blog About Contact

Vulmon Search Vulmon Research Vulmon Alerts Vulmap

Twitter Reddit Linkedin Facebook

CVE-2016-6329

Vulnerability Summary

Vulnerability Trend

Vendor Advisories

References

Vulmon Search

About

Products

Connect