Vulnerabilities > Openvpn > Openvpn > 2.0

DATE CVE VULNERABILITY TITLE RISK
2018-03-16 CVE-2018-7544 Use of Externally-Controlled Format String vulnerability in Openvpn
A cross-protocol scripting issue was discovered in the management interface in OpenVPN through 2.4.5.
network
low complexity
openvpn CWE-134
critical
9.1
2006-05-05 CVE-2006-2229 Denial-Of-Service vulnerability in Openvpn and Openvpn Access Server
OpenVPN 2.0.7 and earlier, when configured to use the --management option with an IP that is not 127.0.0.1, uses a cleartext password for TCP sessions to the management interface, which might allow remote attackers to view sensitive information or cause a denial of service.
network
high complexity
openvpn
4.0
2006-04-06 CVE-2006-1629 Remote Code Execution vulnerability in Openvpn and Openvpn Access Server
OpenVPN 2.0 through 2.0.5 allows remote malicious servers to execute arbitrary code on the client by using setenv with the LD_PRELOAD environment variable.
network
low complexity
openvpn
critical
9.0
2005-11-02 CVE-2005-3409 Remote Denial Of Service vulnerability in Openvpn and Openvpn Access Server
OpenVPN 2.x before 2.0.4, when running in TCP mode, allows remote attackers to cause a denial of service (segmentation fault) by forcing the accept function call to return an error status, which leads to a null dereference in an exception handler.
network
low complexity
openvpn
5.0
2005-11-01 CVE-2005-3393 Remote Format String vulnerability in Openvpn and Openvpn Access Server
Format string vulnerability in the foreign_option function in options.c for OpenVPN 2.0.x allows remote clients to execute arbitrary code via format string specifiers in a push of the dhcp-option command option.
network
low complexity
openvpn
7.5
2005-08-24 CVE-2005-2534 Denial Of Service vulnerability in OpenVPN Same Client Certificate
Race condition in OpenVPN before 2.0.1, when --duplicate-cn is not enabled, allows remote attackers to cause a denial of service (server crash) via simultaneous TCP connections from multiple clients that use the same client certificate.
network
high complexity
openvpn
2.6
2005-08-24 CVE-2005-2533 Unspecified vulnerability in Openvpn
OpenVPN before 2.0.1, when running in "dev tap" Ethernet bridging mode, allows remote authenticated clients to cause a denial of service (memory exhaustion) via a flood of packets with a large number of spoofed MAC addresses.
local
low complexity
openvpn
2.1
2005-08-24 CVE-2005-2532 Denial Of Service vulnerability in OpenVPN Packet Decryption Failure
OpenVPN before 2.0.1 does not properly flush the OpenSSL error queue when a packet can not be decrypted by the server, which allows remote authenticated attackers to cause a denial of service (client disconnection) via a large number of packets that can not be decrypted.
network
low complexity
openvpn
5.0
2005-08-24 CVE-2005-2531 Denial Of Service vulnerability in OpenVPN Failed Authentication
OpenVPN before 2.0.1, when running with "verb 0" and without TLS authentication, does not properly flush the OpenSSL error queue when a client fails certificate authentication to the server and causes the error to be processed by the wrong client, which allows remote attackers to cause a denial of service (client disconnection) via a large number of failed authentication attempts.
network
low complexity
openvpn
5.0