V-248831

Discussion

The SCTP is a transport layer protocol, designed to support the idea of message-oriented communication, with several streams of messages within one connection. Disabling SCTP protects the system against exploitation of any flaws in its implementation.

Check Content

Verify the operating system disables the ability to load the "sctp" kernel module.  
 
     $ sudo grep -r sctp /etc/modprobe.d/* | grep -i "/bin/false" | grep -v "^#" 
     install sctp /bin/false
 
If the command does not return any output or the line is commented out, and use of SCTP is not documented with the Information System Security Officer (ISSO) as an operational requirement, this is a finding.  
 
Verify the operating system disables the ability to use SCTP with the following command:  
 
     $ sudo grep sctp /etc/modprobe.d/* | grep -i "blacklist" | grep -v "^#" 
     blacklist sctp 
 
If the command does not return any output or the output is not "blacklist sctp", and use of SCTP is not documented with the ISSO as an operational requirement, this is a finding.