Description
The openvpn_decrypt function in crypto.c in OpenVPN 2.3.0 and earlier, when running in UDP mode, allows remote attackers to obtain sensitive information via a timing attack involving an HMAC comparison function that does not run in constant time and a padding oracle attack on the CBC mode cipher.
Published: 2013-11-15
Score: 2.6 Low
EPSS: 1.5% 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-2013-2042 The openvpn_decrypt function in crypto.c in OpenVPN 2.3.0 and earlier, when running in UDP mode, allows remote attackers to obtain sensitive information via a timing attack involving an HMAC comparison function that does not run in constant time and a padding oracle attack on the CBC mode cipher.
Ubuntu USN Ubuntu USN USN-2368-1 OpenVPN vulnerability
History

No history.

Subscriptions

Opensuse Opensuse
Openvpn Openvpn Openvpn Access Server
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-06T15:20:37.491Z

Reserved: 2013-02-19T00:00:00.000Z

Link: CVE-2013-2061

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2013-11-18T02:55:07.530

Modified: 2026-04-29T01:13:23.040

Link: CVE-2013-2061

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses