CVE-2013-2061

Severity Score

2.6

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

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.

*Credits: N/A

CVSS Scores

NISTv2 2.6

Attack Vector

Network

Attack Complexity

High

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2013-02-19 CVE Reserved
2013-05-28 CVE Published
2024-08-02 EPSS Updated
2024-08-06 CVE Updated
2024-08-06 First Exploit
---------- 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

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105568.html	2020-05-12
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105609.html	2020-05-12
http://lists.opensuse.org/opensuse-updates/2013-11/msg00012.html	2020-05-12
http://lists.opensuse.org/opensuse-updates/2013-11/msg00016.html	2020-05-12
http://www.mandriva.com/security/advisories?name=MDVSA-2013:167	2020-05-12

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