Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2013-2061

Severity CVSS v4.0:
Pending analysis
Type:
CWE-200 Information Leak / Disclosure
Publication date:
18/11/2013
Last modified:
11/04/2025

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.

Impact

Vector 2.0
AV:N/AC:H/Au:N/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 2.60 LOW
Vector: AV:N/AC:H/Au:N/C:P/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): None
Availability (A): None

Base Score 2.0
2.60
Severity 2.0
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:* 2.3.0 (including)
cpe:2.3:a:openvpn:openvpn:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:openvpn:openvpn:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:openvpn:openvpn:1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:openvpn:openvpn:1.3.1:*:*:*:*:*:*:*
cpe:2.3:a:openvpn:openvpn:1.3.2:*:*:*:*:*:*:*
cpe:2.3:a:openvpn:openvpn:1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:openvpn:openvpn:1.4.1:*:*:*:*:*:*:*
cpe:2.3:a:openvpn:openvpn:1.4.2:*:*:*:*:*:*:*
cpe:2.3:a:openvpn:openvpn:1.4.3:*:*:*:*:*:*:*
cpe:2.3:a:openvpn:openvpn:1.5.0:*:*:*:*:*:*:*
cpe:2.3:a:openvpn:openvpn:1.6.0:*:*:*:*:*:*:*
cpe:2.3:a:openvpn:openvpn:2.1.0:*:*:*:*:*:*:*
cpe:2.3:a:openvpn:openvpn:2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:openvpn:openvpn_access_server:2.0.0:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools