CVE-2013-2061: Opensuse

Low severity, CVSS 2.6. EPSS: 2.8% chance of exploitation in the next 30 days.

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.

Affected products

• Opensuse Opensuse: version 11.4 only
• Openvpn Openvpn: up to and including 2.3.0; version 1.2.0 only; version 1.2.1 only; version 1.3.0 only; version 1.3.1 only; version 1.3.2 only; …
• Openvpn Openvpn Access Server: version 2.0.0 only

Published 2013-11-18. Last modified 2026-06-16.