VAMI must explicitly disable Multipurpose Internet Mail Extensions (MIME) mime mappings based on "Content-Type".
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-256656 | SRG-APP-000141-WSR-000081 | VCLD-70-000012 | SV-256656r888490_rule | 2023-06-15 | 1 |
Description
Controlling what a user of a hosted application can access is part of the security posture of the web server. Any time a user can access more functionality than is needed for the operation of the hosted application poses a security issue. A user with too much access can view information that is not needed for the user's job role, or the user could use the function in an unintentional manner.
A MIME tells the web server what type of program various file types and extensions are and what external utilities or programs are needed to execute the file type. A limited number of MIME types must be configured manually, and automatic mapping must be disabled.
ℹ️ Check
At the command prompt, run the following command:
# /opt/vmware/sbin/vami-lighttpd -p -f /opt/vmware/etc/lighttpd/lighttpd.conf 2>/dev/null|grep "mimetype.use-xattr"|sed 's: ::g'
Expected result:
mimetype.use-xattr="disable"
If the output does not match the expected result, this is a finding.
Note: The 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". Refer to KB Article 2100508 for more details:
https://kb.vmware.com/s/article/2100508
✔️ Fix
Navigate to and open:
/opt/vmware/etc/lighttpd/lighttpd.conf
Add or reconfigure the following value:
mimetype.use-xattr = "disable"
Restart the service with the following command:
# vmon-cli --restart applmgmt