Openvpn: >> Openvpn Access Server Security Vulnerabilities
Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to a denial of service.
CVSS Score
7.5
EPSS Score
0.003
Published
2023-11-11
Use after free in OpenVPN version 2.6.0 to 2.6.6 may lead to undefined behavoir, leaking memory buffers or remote execution when sending network buffers to a remote peer.
CVSS Score
9.8
EPSS Score
0.018
Published
2023-11-11
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.
CVSS Score
7.5
EPSS Score
0.003
Published
2022-07-06
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
CVSS Score
7.5
EPSS Score
0.002
Published
2022-07-06
OpenVPN Access Server before 2.11 uses a weak random generator used to create user session token for the web portal
CVSS Score
7.5
EPSS Score
0.003
Published
2022-07-06
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.
CVSS Score
6.1
EPSS Score
0.003
Published
2021-09-23
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.
CVSS Score
5.3
EPSS Score
0.001
Published
2021-06-04
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.
CVSS Score
7.5
EPSS Score
0.02
Published
2021-06-04
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.
CVSS Score
7.5
EPSS Score
0.003
Published
2020-07-14
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.
CVSS Score
7.5
EPSS Score
0.005
Published
2020-05-04
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