// For flags

CVE-2020-11462

 

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An issue was discovered in OpenVPN Access Server before 2.7.0 and 2.8.x before 2.8.3. With the full featured RPC2 interface enabled, it is possible to achieve a temporary DoS state of the management interface when sending an XML Entity Expansion (XEE) payload to the XMLRPC based RPC2 interface. The duration of the DoS state depends on available memory and CPU speed. The default restricted mode of the RPC2 interface is NOT vulnerable.

Se ha descubierto un problema en OpenVPN Access Server versiones anteriores a la versión 2.7.0 y versiones 2.8.x anteriores a la versión 2.8.3. Con la interfaz RPC2 con todas las funcionalidades activadas, es posible conseguir un estado DoS temporal de la interfaz de administración cuando se envía una carga útil XML Entity Expansion (XEE) hacia la interfaz RPC2 basada en XMLRPC. La duración del estado DoS depende de la memoria disponible y de la velocidad de una CPU. El modo restringido por defecto de la interfaz RPC2 NO es vulnerable.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-04-01 CVE Reserved
  • 2020-05-04 CVE Published
  • 2023-03-07 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
CAPEC
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 Access Server
Search vendor "Openvpn" for product "Openvpn Access Server"
 < 2.7.0
Search vendor "Openvpn" for product "Openvpn Access Server" and version " < 2.7.0"
-
Affected
Openvpn
Search vendor "Openvpn"
 Openvpn Access Server
Search vendor "Openvpn" for product "Openvpn Access Server"
 >= 2.8.0 <= 2.8.3
Search vendor "Openvpn" for product "Openvpn Access Server" and version " >= 2.8.0 <= 2.8.3"
-
Affected