Check: GEN005500
HP-UX 11.31 STIG:
GEN005500
(in versions v1 r19 through v1 r13)
Title
The SSH daemon must be configured to only use the SSHv2 protocol. (Cat I impact)
Discussion
SSHv1 is not a DoD-approved protocol and has many well-known vulnerability exploits. Exploits of the SSH daemon could provide immediate root access to the system.
Check Content
Check the SSH daemon configuration. Note that keywords are case-insensitive and arguments (args) are case-sensitive. keyword=Protocol Required arg(s)=2 Default arg values include: "2,1" Note: When the default "arg" value exactly matches the required "arg" value (see above), the <keyword=arg> are not required to exist (commented or uncommented) in the ssh (client) or sshd (server) configuration file. While not required, it is recommended that the configuration file(s) be populated with all keywords and assigned arg values as a means to explicitly document the ssh(d) binary's expected behavior. Examine the file. # cat /opt/ssh/etc/sshd_config | tr '\011' ' ' | tr -s ' ' | sed -e 's/^[ \t]*//' | grep -v '^#' | grep -i "Protocol" | cut -f 2,2 -d " " If the return value is "1" or "2,1" (double quotes are for emphasis only) , this is a finding.
Fix Text
Edit the configuration file and modify the Protocol line entry to appear as follows: Protocol 2
Additional Identifiers
Rule ID: SV-35209r1_rule
Vulnerability ID: V-4295
Group Title: GEN005500
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-001436 |
The organization disables organization-defined networking protocols within the information system deemed to be nonsecure except for explicitly identified components in support of specific operational requirements. |
Controls
Number | Title |
---|---|
No controls are assigned to this check |