The control script lists of preloaded libraries must contain only absolute paths on AIX systems.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-215422	AIX7-00-003127	SV-215422r508663_rule		Medium

Description
The library preload list environment variable contains a list of libraries for the dynamic linker to load before loading the libraries required by the binary. If this list contains paths to libraries relative to the current working directory, unintended libraries may be preloaded.

STIG	Date
IBM AIX 7.x Security Technical Implementation Guide	2021-11-19

Details

Check Text ( C-16620r294717_chk )
Verify run control scripts' library preload list using command: # grep -r LDR_PRELOAD /etc/rc* /etc/rc.teboot:export LDR_PRELOAD=/../usr/bin /etc/rc.teboot:export LDR_PRELOAD=/usr/bin This variable is formatted as a colon-separated list of paths. If there is an empty entry, such as a leading or trailing colon, or two consecutive colons, this is a finding. If an entry begins with a character other than a slash (/) or other than "$PATH", it is a relative path, and this is a finding.

Check Text ( C-16620r294717_chk )

Verify run control scripts' library preload list using command:

# grep -r LDR_PRELOAD /etc/rc*
/etc/rc.teboot:export LDR_PRELOAD=/../usr/bin
/etc/rc.teboot:export LDR_PRELOAD=/usr/bin

This variable is formatted as a colon-separated list of paths.

If there is an empty entry, such as a leading or trailing colon, or two consecutive colons, this is a finding.

If an entry begins with a character other than a slash (/) or other than "$PATH", it is a relative path, and this is a finding.

Fix Text (F-16618r294718_fix)
Edit the run control scripts' library preload list and remove relative paths.