An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).

In rare scenarios, the cpca process on the Security Management Server / Domain Management Server may exit unexpectedly, creating a core dump file. When the cpca process is down, VPN and SIC connectivity issues may occur if the CRL is not present in the Security Gateway's CRL cache.

Authenticated Gaia users can inject code or commands by global variables through special HTTP requests. A Security fix that mitigates this vulnerability is available.