The Photon operating system must restrict core dumps.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-258904 | SRG-OS-000480-GPOS-00227 | PHTN-40-000246 | SV-258904r991589_rule | 2024-07-11 | 2 |
Description
By enabling the fs.suid_dumpable kernel parameter, core dumps are not generated for setuid or otherwise protected/tainted binaries. This prevents users from potentially accessing core dumps with privileged information they would otherwise not have access to read.
ℹ️ Check
At the command line, run the following command to verify core dumps are restricted:
# /sbin/sysctl fs.suid_dumpable
Example result:
fs.suid_dumpable = 0
If the "fs.suid_dumpable" kernel parameter is not set to "0", this is a finding.
✔️ Fix
Navigate to and open:
/etc/sysctl.d/zz-stig-hardening.conf
Add or update the following line:
fs.suid_dumpable = 0
At the command line, run the following command to load the new configuration:
# /sbin/sysctl --load /etc/sysctl.d/zz-stig-hardening.conf
Note: If the file zz-stig-hardening.conf does not exist, it must be created.