CVE-2016-6329
Summary
| CVE | CVE-2016-6329 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2017-01-31 22:59:00 UTC |
| Updated | 2025-04-20 01:37:25 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.0 5.9 MEDIUM from [email protected]
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Problem Types: CWE-200 | CWE-310 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 5.9 | MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| 2.0 | [email protected] | Primary | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
CVSS v3.0 Breakdown
Attack Vector
NetworkAttack Complexity
HighPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
NoneAvailability
NoneCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
MediumAuthentication
NoneConfidentiality
PartialIntegrity
NoneAvailability
NoneAV:N/AC:M/Au:N/C:P/I:N/A:N
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| OpenVPN: Multiple vulnerabilities (GLSA 201611-02) — Gentoo Security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | Third Party Advisory |
| OpenVPN Blowfish Cipher Block Collision Weakness Lets Remote Users Decrypt Data in Certain Cases - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | Third Party Advisory, VDB Entry |
| SWEET32 – OpenVPN Community | af854a3a-2127-422b-91ae-364da2661108 | community.openvpn.net | Vendor Advisory |
| OpenVPN CVE-2016-6329 Information Disclosure Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| IBM Security Bulletin: OpenSSL and OpenVPN vulnerabilities affect IBM Rational Team Concert (CVE-2016-2183, CVE-2016-6329) - United States | af854a3a-2127-422b-91ae-364da2661108 | www-01.ibm.com | Third Party Advisory |
| IBM Security Bulletin: IBM i is affected by several vulnerabilities (CVE-2016-2183 and CVE-2016-6329) - United States | af854a3a-2127-422b-91ae-364da2661108 | www-01.ibm.com | Permissions Required, Third Party Advisory |
| cert-portal.siemens.com/productcert/pdf/ssa-556833.pdf | af854a3a-2127-422b-91ae-364da2661108 | cert-portal.siemens.com | |
| Sweet32: Birthday attacks on 64-bit block ciphers in TLS and OpenVPN | af854a3a-2127-422b-91ae-364da2661108 | sweet32.info | Technical Description, Third Party Advisory |
| IBM Security Bulletin: Vulnerabilities in OpenSSL, OpenVPN and GNU glibc affect IBM Security Virtual Server Protection for VMware - United States | af854a3a-2127-422b-91ae-364da2661108 | www-01.ibm.com | Third Party Advisory |
| HPE Support document - HPE Support Center | af854a3a-2127-422b-91ae-364da2661108 | h20566.www2.hpe.com | Third Party Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.