CVE-2013-2061
Mandriva Linux Security Advisory 2013-167
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
1Exploited in Wild
-Decision
Descriptions
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.
La función openvpn_decrypt en el archivo crypto.c en OpenVPN versiones 2.3.0 y anteriores, cuando se ejecuta en modo UDP, permite a los atacantes remotos obtener información confidencial por medio de un ataque de sincronización que implica una función de comparación HMAC que no se ejecuta en tiempo constante y un ataque de tipo padding oracle en el cifrado en modo CBC.
OpenVPN 2.3.0 and earlier running in UDP mode are subject to chosen ciphertext injection due to a non-constant-time HMAC comparison function. Plaintext recovery may be possible using a padding oracle attack on the CBC mode cipher implementation of the crypto library, optimistically at a rate of about one character per 3 hours. PolarSSL seems vulnerable to such an attack; the vulnerability of OpenSSL has not been verified or tested.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2013-02-19 CVE Reserved
- 2013-05-28 CVE Published
- 2024-08-06 CVE Updated
- 2024-08-06 First Exploit
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CAPEC
References (10)
| URL | Tag | Source |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2013/05/06/6 | Mailing List |
|
| https://bugs.gentoo.org/show_bug.cgi?id=468756 | X_refsource_confirm | |
| https://bugzilla.redhat.com/show_bug.cgi?id=960192 | X_refsource_confirm | |
| https://community.openvpn.net/openvpn/wiki/SecurityAnnouncement-f375aa67cc | X_refsource_confirm |
| URL | Date | SRC |
|---|---|---|
| https://github.com/OpenVPN/openvpn/commit/11d21349a4e7e38a025849479b36ace7c2eec2ee | 2024-08-06 |
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Openvpn Search vendor "Openvpn" | Openvpn Search vendor "Openvpn" for product "Openvpn" | <= 2.3.0 Search vendor "Openvpn" for product "Openvpn" and version " <= 2.3.0" | - |
Affected
| ||||||
| Openvpn Search vendor "Openvpn" | Openvpn Search vendor "Openvpn" for product "Openvpn" | 1.2.0 Search vendor "Openvpn" for product "Openvpn" and version "1.2.0" | - |
Affected
| ||||||
| Openvpn Search vendor "Openvpn" | Openvpn Search vendor "Openvpn" for product "Openvpn" | 1.2.1 Search vendor "Openvpn" for product "Openvpn" and version "1.2.1" | - |
Affected
| ||||||
| Openvpn Search vendor "Openvpn" | Openvpn Search vendor "Openvpn" for product "Openvpn" | 1.3.0 Search vendor "Openvpn" for product "Openvpn" and version "1.3.0" | - |
Affected
| ||||||
| Openvpn Search vendor "Openvpn" | Openvpn Search vendor "Openvpn" for product "Openvpn" | 1.3.1 Search vendor "Openvpn" for product "Openvpn" and version "1.3.1" | - |
Affected
| ||||||
| Openvpn Search vendor "Openvpn" | Openvpn Search vendor "Openvpn" for product "Openvpn" | 1.3.2 Search vendor "Openvpn" for product "Openvpn" and version "1.3.2" | - |
Affected
| ||||||
| Openvpn Search vendor "Openvpn" | Openvpn Search vendor "Openvpn" for product "Openvpn" | 1.4.0 Search vendor "Openvpn" for product "Openvpn" and version "1.4.0" | - |
Affected
| ||||||
| Openvpn Search vendor "Openvpn" | Openvpn Search vendor "Openvpn" for product "Openvpn" | 1.4.1 Search vendor "Openvpn" for product "Openvpn" and version "1.4.1" | - |
Affected
| ||||||
| Openvpn Search vendor "Openvpn" | Openvpn Search vendor "Openvpn" for product "Openvpn" | 1.4.2 Search vendor "Openvpn" for product "Openvpn" and version "1.4.2" | - |
Affected
| ||||||
| Openvpn Search vendor "Openvpn" | Openvpn Search vendor "Openvpn" for product "Openvpn" | 1.4.3 Search vendor "Openvpn" for product "Openvpn" and version "1.4.3" | - |
Affected
| ||||||
| Openvpn Search vendor "Openvpn" | Openvpn Search vendor "Openvpn" for product "Openvpn" | 1.5.0 Search vendor "Openvpn" for product "Openvpn" and version "1.5.0" | - |
Affected
| ||||||
| Openvpn Search vendor "Openvpn" | Openvpn Search vendor "Openvpn" for product "Openvpn" | 1.6.0 Search vendor "Openvpn" for product "Openvpn" and version "1.6.0" | - |
Affected
| ||||||
| Openvpn Search vendor "Openvpn" | Openvpn Search vendor "Openvpn" for product "Openvpn" | 2.1.0 Search vendor "Openvpn" for product "Openvpn" and version "2.1.0" | - |
Affected
| ||||||
| Openvpn Search vendor "Openvpn" | Openvpn Search vendor "Openvpn" for product "Openvpn" | 2.2.0 Search vendor "Openvpn" for product "Openvpn" and version "2.2.0" | - |
Affected
| ||||||
| Openvpn Search vendor "Openvpn" | Openvpn Access Server Search vendor "Openvpn" for product "Openvpn Access Server" | 2.0.0 Search vendor "Openvpn" for product "Openvpn Access Server" and version "2.0.0" | - |
Affected
| ||||||
| Opensuse Search vendor "Opensuse" | Opensuse Search vendor "Opensuse" for product "Opensuse" | 11.4 Search vendor "Opensuse" for product "Opensuse" and version "11.4" | - |
Affected
| ||||||