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 2013-11-18 02:55:08
Updated 2020-05-12 14:21:13
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: Information leak

Exploit prediction scoring system (EPSS) score for CVE-2013-2061

Probability of exploitation activity in the next 30 days: 0.48%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 73 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2013-2061

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
2.6
LOW AV:N/AC:H/Au:N/C:P/I:N/A:N
4.9
2.9
NIST

CWE ids for CVE-2013-2061

References for CVE-2013-2061

Products affected by CVE-2013-2061

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