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AIX CDE must conceal, via the session lock, information previously visible on the display with a publicly viewable image.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-215212AIX7-00-001101SV-215212r958404_ruleCCI-000060medium
Description
A session 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. The session lock is implemented at the point where session activity can be determined. The operating system session lock event must include an obfuscation of the display screen so as to prevent other users from reading what was previously displayed. Publicly viewable images can include static or dynamic images, for example, patterns used with screen savers, photographic images, solid colors, a clock, a battery life indicator, or a blank screen, with the additional caveat that none of the images convey sensitive information.
STIGDate
IBM AIX 7.x Security Technical Implementation Guide2024-08-16

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-24.1Pattern-Hiding Displays
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (15) 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
AU-10Non-repudiation
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
IA-2(2)Multi-factor Authentication to Non-privileged Accounts
1.00
IA-2(3)Local Access to Privileged Accounts
1.00

+5 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-000060
1.00

Details

Check Text (C-215212r958404_chk)

If CDE (X11) is not used on AIX, this is Not Applicable. Ensure that the screen saver and session timeout are not disabled. From the command prompt, run the following script: # AIX7-00-001101_Check.sh Note: This script is included in the STIG package. 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 is greater than "15", this is a finding.

Fix Text (F-16408r294088_fix)

From the command prompt, run the following script to set the default timeout parameters "dtsession*saverTimeout:" and "dtsession*lockTimeout:" as "15" minutes: # AIX7-00-001101_Fix.sh Note: This script is included in the STIG package.