Title

The traceroute file must not have an extended ACL. (Cat II impact)

Discussion

If an extended ACL exists on the traceroute executable file, it may provide unauthorized users with access to the file. Malicious code could be inserted by an attacker and triggered whenever the traceroute command is executed by authorized users. Additionally, if an unauthorized user is granted executable permissions to the traceroute command, it could be used to gain information about the network topology behind the firewall. This information may allow an attacker to determine trusted routers and other network information possibly leading to system and network compromise.

Check Content

Check the permissions of the /usr/sbin/traceroute file. # ls -lL /usr/contrib/bin/traceroute If the permissions include a "+", the file has an extended ACL and this is a finding.

Fix Text

Remove the extended ACL from the file. # chmod A- /usr/sbin/traceroute

Additional Identifiers

Rule ID: SV-227835r603266_rule

Vulnerability ID: V-227835

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

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