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.
Published: 2017-01-31
Score: 5.9 Medium
EPSS: 5.5% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2016-7256 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.
Ubuntu USN Ubuntu USN USN-3339-1 OpenVPN vulnerabilities
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-06T01:29:18.449Z

Reserved: 2016-07-26T00:00:00.000Z

Link: CVE-2016-6329

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2017-01-31T22:59:00.377

Modified: 2026-05-13T00:24:29.033

Link: CVE-2016-6329

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses