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AIX must automatically lock after 15 minutes of inactivity in the CDE Graphical desktop environment.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-215318AIX7-00-003000SV-215318r958402_ruleCCI-000057medium
Description
A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not log out because of the temporary nature of the absence. Rather than relying on the user to manually lock their operating system session prior to vacating the vicinity, operating systems need to be able to identify when a user's session has idled and take action to initiate the session lock. The session lock is implemented at the point where session activity can be determined and/or controlled.
STIGDate
IBM AIX 7.x Security Technical Implementation Guide2026-06-15

Related Frameworks

1 mapping across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

IAC-24Session Lock
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (18) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-11Device Lock
1.00
AC-11(1)Pattern-hiding Displays
1.00
AC-12Session Termination
1.00
AC-12(2)Termination Message
1.00
AU-10Non-repudiation
1.00
CM-7Least Functionality
1.00
IA-11Re-authentication
1.00
IA-2Identification and Authentication (Organizational Users)
1.00
IA-2(1)Multi-factor Authentication to Privileged Accounts
1.00
IA-2(12)Acceptance of PIV Credentials
1.00

+8 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.1.10
1.00
CCI1 mapping
CCI-000057
1.00

Details

Check Text (C-215318r958402_chk)

If CDE (X11) is not used on AIX, this is Not Applicable. From the command prompt, run the following script: for file in /usr/dt/config/*/sys.resources; do etc_file=`echo $file | sed -e s/usr/etc/` echo "\nChecking config file "$etc_file"..." if [[ ! -f $etc_file ]]; then echo "Missing config file "$etc_file else cat $etc_file |grep 'dtsession\*saverTimeout:' cat $etc_file |grep 'dtsession\*lockTimeout:' fi done The above script should yield the following output: Checking config file /etc/dt/config/C/sys.resources... Missing config file /etc/dt/config/C/sys.resources Checking config file /etc/dt/config/POSIX/sys.resources... dtsession*saverTimeout: 15 dtsession*lockTimeout: 30 Checking config file /etc/dt/config/en_US/sys.resources... dtsession*saverTimeout: 15 dtsession*lockTimeout: 25 If the result of the script shows any config file missing, or any of the "dtsession*saverTimeout" or "dtsession*lockTimeout" values are greater than "15", this is a finding.

Fix Text (F-16514r294406_fix)

From the command prompt, run the following script to set the default timeout parameters "dtsession*saverTimeout:" and "dtsession*lockTimeout:" as "15" minutes: for file in /usr/dt/config/*/sys.resources; do etc_file=`echo $file | sed -e s/usr/etc/` echo "\nupdating config file "$etc_file"..." if [[ ! -f $etc_file ]]; then dir=`dirname $file | sed -e s/usr/etc/` mkdir -p $dir echo 'dtsession*saverTimeout: 15' >> $dir/sys.resources echo 'dtsession*lockTimeout: 15' >> $dir/sys.resources else cp $etc_file $etc_file.bak cat $etc_file | grep -v 'dtsession\*saverTimeout:' > $etc_file.sav cat $etc_file.sav | grep -v 'dtsession\*lockTimeout:' > $etc_file echo 'dtsession*saverTimeout: 15' >> $etc_file echo 'dtsession*lockTimeout: 15' >> $etc_file fi done