Check: VCLD-67-000028
VMware vSphere 6.7 VAMI-lighttpd STIG:
VCLD-67-000028
(in versions v1 r3 through v1 r2)
Title
VAMI must set the encoding for all text mime types to UTF-8. (Cat II impact)
Discussion
Invalid user input occurs when a user inserts data or characters into a hosted application's data entry field and the hosted application is unprepared to process that data. This results in unanticipated application behavior, potentially leading to an application compromise. Invalid user input is one of the primary methods employed when attempting to compromise an application. An attacker can also enter Unicode into hosted applications in an effort to break out of the document home or root home directory or to bypass security checks.
Check Content
Note: The below command must be run from a bash shell and not from a shell generated by the "appliance shell". Use the "chsh" command to change the shell for the account to "/bin/bash". At the command prompt, execute the following command: # /opt/vmware/sbin/vami-lighttpd -p -f /opt/vmware/etc/lighttpd/lighttpd.conf|awk '/mimetype\.assign/,/\)/'|grep "text/"|grep -v "charset=utf-8" If the command returns any value, this is a finding.
Fix Text
Navigate to and open /opt/vmware/etc/lighttpd/lighttpd.conf. Navigate to the "mimetype.assign" block. Replace all the mappings whose assigned type is "text/*" with mappings for UTF-8 encoding, as follows: ".css" => "text/css; charset=utf-8", ".html" => "text/html; charset=utf-8", ".htm" => "text/html; charset=utf-8", ".js" => "text/javascript; charset=utf-8", ".asc" => "text/plain; charset=utf-8", ".c" => "text/plain; charset=utf-8", ".cpp" => "text/plain; charset=utf-8", ".log" => "text/plain; charset=utf-8", ".conf" => "text/plain; charset=utf-8", ".text" => "text/plain; charset=utf-8", ".txt" => "text/plain; charset=utf-8", ".spec" => "text/plain; charset=utf-8", ".dtd" => "text/xml; charset=utf-8", ".xml" => "text/xml; charset=utf-8",
Additional Identifiers
Rule ID: SV-239735r879652_rule
Vulnerability ID: V-239735
Group Title: SRG-APP-000251-WSR-000157
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-001310 |
The information system checks the validity of organization-defined inputs. |
Controls
Number | Title |
---|---|
SI-10 |
Information Input Validation |