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().
The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openvpn | Openvpn | * | 2.3.16 (including) |
| Openvpn | Openvpn | 2.4.0 (including) | 2.4.0 (including) |
| Openvpn | Openvpn | 2.4.0-alpha2 (including) | 2.4.0-alpha2 (including) |
| Openvpn | Openvpn | 2.4.0-beta1 (including) | 2.4.0-beta1 (including) |
| Openvpn | Openvpn | 2.4.0-beta2 (including) | 2.4.0-beta2 (including) |
| Openvpn | Openvpn | 2.4.0-rc1 (including) | 2.4.0-rc1 (including) |
| Openvpn | Openvpn | 2.4.0-rc2 (including) | 2.4.0-rc2 (including) |
| Openvpn | Openvpn | 2.4.1 (including) | 2.4.1 (including) |
| Openvpn | Openvpn | 2.4.2 (including) | 2.4.2 (including) |