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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openvpn | Openvpn | <= 2.3.14 |
Related Weaknesses (CWE)
References
- http://www-01.ibm.com/support/docview.wss?uid=nas8N1021697Permissions RequiredThird Party Advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21991482Third Party Advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21995039Third Party Advisory
- http://www.securityfocus.com/bid/92631Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1036695Third Party AdvisoryVDB Entry
- https://cert-portal.siemens.com/productcert/pdf/ssa-556833.pdf
- https://community.openvpn.net/openvpn/wiki/SWEET32Vendor Advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-cThird Party Advisory
- https://security.gentoo.org/glsa/201611-02Third Party Advisory
- https://sweet32.info/Technical DescriptionThird Party Advisory
- http://www-01.ibm.com/support/docview.wss?uid=nas8N1021697Permissions RequiredThird Party Advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21991482Third Party Advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21995039Third Party Advisory
- http://www.securityfocus.com/bid/92631Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1036695Third Party AdvisoryVDB Entry
FAQ
What is CVE-2016-6329?
CVE-2016-6329 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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-ove...
How severe is CVE-2016-6329?
CVE-2016-6329 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-6329?
Check the references section above for vendor advisories and patch information. Affected products include: Openvpn Openvpn.