Searching openvpn software vulnerabilities

OpenVPN before 2.0.1, when running with "verb 0

OpenVPN | before |

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.


OpenVPN before 2.0.1 does not properly flush th

OpenVPN | before |

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.


OpenVPN before 2.0.1, when running in "dev tap"

OpenVPN | before |

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.


Race condition in OpenVPN before 2.0.1, when --

condition | OpenVPN | before | Race |

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.


Format string vulnerability in the foreign_opti

foreign_option | vulnerability | dhcp-option | specifiers | arbitrary | optionsc | function | clients | execute | OpenVPN | command | option | allows | string | Format | remote | code | push | via | 20x |

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.


OpenVPN 2.x before 2.0.4, when running in TCP m

OpenVPN | before |

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.


OpenVPN 2.0.7 and earlier, when configured to u

OpenVPN |

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.


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