Vulnerability Monitor

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CVE-2013-2061

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

2013-11-18T02:55:07.530

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 2.6 (LOW)

CVSSv2 Vector

AV:N/AC:H/Au:N/C:P/I:N/A:N

  • Access Vector: NETWORK
  • Access Complexity: HIGH
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: NONE
  • Availability Impact: NONE
Exploitability Score

4.9

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-200
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application openvpn openvpn ≤ 2.3.0 Yes
Application openvpn openvpn 1.2.0 Yes
Application openvpn openvpn 1.2.1 Yes
Application openvpn openvpn 1.3.0 Yes
Application openvpn openvpn 1.3.1 Yes
Application openvpn openvpn 1.3.2 Yes
Application openvpn openvpn 1.4.0 Yes
Application openvpn openvpn 1.4.1 Yes
Application openvpn openvpn 1.4.2 Yes
Application openvpn openvpn 1.4.3 Yes
Application openvpn openvpn 1.5.0 Yes
Application openvpn openvpn 1.6.0 Yes
Application openvpn openvpn 2.1.0 Yes
Application openvpn openvpn 2.2.0 Yes
Application openvpn openvpn_access_server 2.0.0 Yes
Operating System opensuse opensuse 11.4 Yes
References