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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 5.94% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 92.9% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2017-01-31 22:00Z9 YR AGO
- Last updated
- 2024-08-06 01:29Z2 YR AGO
- Reserved
- 2016-07-26
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 006e0539bb581c735abb095eeb5c81a2d75467cd31ecd9efaaa33d8b30de8745
05 Affected products
06 References
- sweet32.infohttps://sweet32.info/
- h20566.www2.hpe.comhttps://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05369403
- www.securitytracker.com1036695http://www.securitytracker.com/id/1036695
- www-01.ibm.comhttp://www-01.ibm.com/support/docview.wss?uid=swg21995039
- www-01.ibm.comhttp://www-01.ibm.com/support/docview.wss?uid=swg21991482
- security.gentoo.orgGLSA-201611-02https://security.gentoo.org/glsa/201611-02
- community.openvpn.nethttps://community.openvpn.net/openvpn/wiki/SWEET32
- www-01.ibm.comhttp://www-01.ibm.com/support/docview.wss?uid=nas8N1021697
- www.securityfocus.com92631http://www.securityfocus.com/bid/92631
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-556833.pdf
07 Fixed in
Ubuntu 14.04 LTS
- openvpn Fixed in 2.3.2-7ubuntu3.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- openvpn Fixed in 2.3.10-1ubuntu2.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.