An issue in TheGreenBow Windows Standard VPN Client 6.87.108 (and older), Windows Enterprise VPN Client 6.87.109 (and older), Windows Enterprise VPN Client 7.5.007 (and older), Android VPN Client 6.4.5 (and older) VPN Client Linux 3.4 (and older), VPN Client MacOS 2.4.10 (and older) allows a remote attacker to execute arbitrary code via the IKEv2 Authentication phase, it accepts malformed ECDSA signatures and establishes the tunnel.

Incorrect validation of OCSP certificates in TheGreenBow VPN Client Windows Enterprise

Incorrect validation of OCSP certificates vulnerability in TheGreenBow VPN, versions 7.5 and 7.6. During the IKEv2 authentication step, the OCSP-enabled VPN client establishes the tunnel even if it does not receive an OCSP response or if the OCSP response signature is invalid.