Title

The Stream Control Transmission Protocol (SCTP) must be disabled unless required. (Cat II impact)

Discussion

The Stream Control Transmission Protocol (SCTP) is an IETF-standardized transport layer protocol. This protocol is not yet widely used. Binding this protocol to the network stack increases the attack surface of the host. Unprivileged local processes may be able to cause the system to dynamically load a protocol handler by opening a socket using the protocol.

Check Content

Check the system to determine if SCTP is installed. # lslpp -L bos.net.\* If the bos.net.sctp fileset is not listed, SCTP is not installed, and this is not a finding. If the bos.net.sctp fileset is installed, ask the SA if SCTP is required for the system. If it is not, this is a finding.

Fix Text

If SCTP is installed and not required, unload it from the kernel and uninstall it from the system. # sctpctrl unload Use SMIT to uninstall the bos.net.sctp fileset.

Additional Identifiers

Rule ID: SV-38960r1_rule

Vulnerability ID: V-22511

Group Title: GEN007020

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.