← Back to Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide

V-282742

CAT II (Medium)

TOSS 5 must use a file integrity tool that is configured to use FIPS 140-3-approved cryptographic hashes for validating file contents and directories.

Rule ID

SV-282742r1201206_rule

STIG

Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide

Version

V1R1

CCIs

CCI-000366 CCI-002450

Discussion

TOSS 5 installation media ships with an optional file integrity tool called Advanced Intrusion Detection Environment (AIDE). AIDE is highly configurable at install time. This requirement assumes the "aide.conf" file is under the "/etc" directory. File integrity tools use cryptographic hashes for verifying file contents and directories have not been altered. These hashes must be 140-3-approved cryptographic hashes. Satisfies: SRG-OS-000480-GPOS-00227, SRG-OS-000550-GPOS-00100

Check Content

Verify AIDE is configured to use FIPS 140-3 file hashing using the following command:

$ grep sha512 /etc/aide.conf 

All=p+i+n+u+g+s+m+S+sha512+acl+xattrs+selinux

If the "sha512" rule is not being used on all uncommented selection lines in the "/etc/aide.conf" file, or another file integrity tool is not using 140-3-approved cryptographic hashes for validating file contents and directories, this is a finding.

Fix Text

Configure the file integrity tool to use FIPS 140-3 cryptographic hashes for validating file and directory contents. 

If AIDE is installed, ensure the "sha512" rule is present on all uncommented file and directory selection lists. Exclude any log files or files expected to change frequently to reduce unnecessary notifications.