Linux distributions
TMA-ALINUX3-1.7.6
Ensure access to /etc/issue.net is configured
MediumLevel 1Automatedlinux
Description
The contents of the /etc/issue.net file are displayed to users prior to login for remote connections from configured services.
How it is checked
Audit method: Shell command
shell
alt0() { s=$(stat -Lc '%a %u %g' /etc/issue.net 2>&1) || { echo "step1: $s"; return 1; }; set -- $s; m=$((8#$1)); [ $((m & ~0644)) -eq 0 ] && [ "$2" = 0 ] && [ "$3" = 0 ] || { echo "step1: /etc/issue.net is mode $1 uid $2 gid $3, want 644 or stricter, uid 0, gid 0"; return 1; }; }; if alt0; then echo compliant; fi- Expected output
compliant
How it is fixed
Fix method: Guidance or infrastructure patch
Run the following commands to set mode, owner, and group on /etc/issue.net: # chown root:root $(readlink -e /etc/issue.net) # chmod u-x,go-wx $(readlink -e /etc/issue.net)
Properties
- Operating systems
- alinux-3
- Tags
- cis-convertedlinux
- Reference
- CIS Alibaba Cloud Linux 3 Benchmark v2.0.0 - 1.7.6
Check this host
Run this on a machine you are allowed to audit. The scan is read-only.
shell
tmaegis scan --target linux