OpenVPN Access Server before 2.11 uses a weak random generator used to create user session token for the web portal
Max Base Score
7.5
Published
2022-07-06
Updated
2022-07-15
EPSS
0.14%
The OpenVPN Access Server installer creates a log file readable for everyone, which from version 2.10.0 and before 2.11.0 may contain a random generated admin password
Max Base Score
7.5
Published
2022-07-06
Updated
2023-07-21
EPSS
0.14%
OpenVPN Connect versions before 3.4.0.4506 (macOS) and OpenVPN Connect before 3.4.0.3100 (Windows) allows man-in-the-middle attackers to intercept configuration profile download requests which contains the users credentials
Max Base Score
5.9
Published
2023-10-17
Updated
2023-10-24
EPSS
0.09%
OpenVPN 2.1 until v2.4.12 and v2.5.6 may enable authentication bypass in external authentication plug-ins when more than one of them makes use of deferred authentication replies, which allows an external user to be granted access with only partially correct credentials.
Max Base Score
9.8
Published
2022-03-18
Updated
2022-09-09
EPSS
0.50%
OpenVPN Access Server 2.10 and prior versions are susceptible to resending multiple packets in a response to a reset packet sent from the client which the client again does not respond to, resulting in a limited amplification attack.
Max Base Score
7.5
Published
2022-07-06
Updated
2022-07-14
EPSS
0.08%
OpenVPN Access Server 2.9.0 through 2.9.4 allow remote attackers to inject arbitrary web script or HTML via the web login page URL.
Max Base Score
6.1
Published
2021-09-23
Updated
2021-09-29
EPSS
0.10%
OpenVPN Connect 3.2.0 through 3.3.0 allows local users to load arbitrary dynamic loadable libraries via an OpenSSL configuration file if present, which allows the user to run arbitrary code with the same privilege level as the main OpenVPN process (OpenVPNConnect.exe).
Max Base Score
7.8
Published
2021-07-02
Updated
2021-07-09
EPSS
0.06%
OpenVPN before version 2.5.3 on Windows allows local users to load arbitrary dynamic loadable libraries via an OpenSSL configuration file if present, which allows the user to run arbitrary code with the same privilege level as the main OpenVPN process (openvpn.exe).
Max Base Score
7.8
Published
2021-07-02
Updated
2021-07-09
EPSS
0.07%
OpenVPN 3 Core Library version 3.6 and 3.6.1 allows a man-in-the-middle attacker to bypass the certificate authentication by issuing an unrelated server certificate using the same hostname found in the verify-x509-name option in a client configuration.
Max Base Score
7.4
Published
2021-07-12
Updated
2022-10-27
EPSS
0.09%
OpenVPN Access Server 2.7.3 to 2.8.7 allows remote attackers to trigger an assert during the user authentication phase via incorrect authentication token data in an early phase of the user authentication resulting in a denial of service.
Max Base Score
7.5
Published
2021-06-04
Updated
2022-09-20
EPSS
0.17%
OpenVPN 2.5.1 and earlier versions allows a remote attackers to bypass authentication and access control channel data on servers configured with deferred authentication, which can be used to potentially trigger further information leaks.
Max Base Score
7.5
Published
2021-04-26
Updated
2022-08-05
EPSS
1.88%
OpenVPN Access Server 2.8.7 and earlier versions allows a remote attackers to bypass authentication and access control channel data on servers configured with deferred authentication, which can be used to potentially trigger further information leaks.
Max Base Score
5.3
Published
2021-06-04
Updated
2022-08-05
EPSS
0.13%
Private Tunnel installer for macOS version 3.0.1 and older versions may corrupt system critical files it should not have access via symlinks in /tmp.
Max Base Score
7.8
Published
2021-05-26
Updated
2021-06-02
EPSS
0.04%
OpenVPN Connect installer for macOS version 3.2.6 and older may corrupt system critical files it should not have access via symlinks in /tmp.
Max Base Score
7.1
Published
2021-03-30
Updated
2021-04-06
EPSS
0.04%
OpenVPN Access Server older than version 2.8.4 and version 2.9.5 generates new user authentication tokens instead of reusing exiting tokens on reconnect making it possible to circumvent the initial token expiry timestamp.
Max Base Score
7.5
Published
2020-07-14
Updated
2021-11-23
EPSS
0.08%
An issue was discovered in OpenVPN 2.4.x before 2.4.9. An attacker can inject a data channel v2 (P_DATA_V2) packet using a victim's peer-id. Normally such packets are dropped, but if this packet arrives before the data channel crypto parameters have been initialized, the victim's connection will be dropped. This requires careful timing due to the small time window (usually within a few seconds) between the victim client connection starting and the server PUSH_REPLY response back to the client. This attack will only work if Negotiable Cipher Parameters (NCP) is in use.
Max Base Score
4.3
Published
2020-04-27
Updated
2022-05-12
EPSS
0.46%
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.
Max Base Score
7.5
Published
2020-05-04
Updated
2020-05-12
EPSS
0.10%
OpenVPN Connect 3.1.0.361 on Windows has Insecure Permissions for %PROGRAMDATA%\OpenVPN Connect\drivers\tap\amd64\win10, which allows local users to gain privileges by copying a malicious drvstore.dll there.
Max Base Score
7.8
Published
2020-02-28
Updated
2020-03-03
EPSS
0.04%
OpenVPN Access Server 2.8.x before 2.8.1 allows LDAP authentication bypass (except when a user is enrolled in two-factor authentication).
Max Base Score
9.8
Published
2020-02-13
Updated
2020-05-12
EPSS
0.43%
openvpnserv.exe (aka the interactive service helper) in OpenVPN 2.4.x before 2.4.6 allows a local attacker to cause a double-free of memory by sending a malformed request to the interactive service. This could cause a denial-of-service through memory corruption or possibly have unspecified other impact including privilege escalation.
Max Base Score
7.8
Published
2018-05-01
Updated
2018-06-13
EPSS
0.04%
** DISPUTED ** A cross-protocol scripting issue was discovered in the management interface in OpenVPN through 2.4.5. When this interface is enabled over TCP without a password, and when no other clients are connected to this interface, attackers can execute arbitrary management commands, obtain sensitive information, or cause a denial of service (SIGTERM) by triggering XMLHttpRequest actions in a web browser. This is demonstrated by a multipart/form-data POST to http://localhost:23000 with a "signal SIGTERM" command in a TEXTAREA element. NOTE: The vendor disputes that this is a vulnerability. They state that this is the result of improper configuration of the OpenVPN instance rather than an intrinsic vulnerability, and now more explicitly warn against such configurations in both the management-interface documentation, and with a runtime warning.
Max Base Score
9.1
Published
2018-03-16
Updated
2018-04-10
EPSS
0.33%
OpenVPN versions before 2.3.3 and 2.4.x before 2.4.4 are vulnerable to a buffer overflow vulnerability when key-method 1 is used, possibly resulting in code execution.
Max Base Score
9.8
Published
2017-10-04
Updated
2022-05-12
EPSS
0.71%
OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service by authenticated remote attacker via sending a certificate with an embedded NULL character.
Max Base Score
6.5
Published
2017-06-27
Updated
2017-07-07
EPSS
0.29%
OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension().
Max Base Score
5.9
Published
2017-06-27
Updated
2019-10-03
EPSS
1.20%
OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service and/or possibly sensitive memory leak triggered by man-in-the-middle attacker.
Max Base Score
7.4
Published
2017-06-27
Updated
2019-10-03
EPSS
0.50%
44 vulnerabilities found
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