Run control scripts lists of preloaded libraries must contain only authorized paths.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22355	GEN001610	SV-37215r3_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 to the current working directory that have not been authorized, unintended libraries may be preloaded. This variable is formatted as a space-separated list of libraries. Paths starting with a slash (/) are absolute paths.

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 to the current working directory that have not been authorized, unintended libraries may be preloaded. This variable is formatted as a space-separated list of libraries. Paths starting with a slash (/) are absolute paths.

STIG	Date
Red Hat Enterprise Linux 5 Security Technical Implementation Guide	2017-03-01

Details

Check Text ( C-37535r3_chk )
Verify run control scripts' library preload list. # grep -r LD_PRELOAD /etc/rc* /etc/init.d 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 has not been documented with the ISSO, this is a finding.

Fix Text (F-32781r2_fix)
Edit the run control script and remove the relative path entries from the library preload variables that are not documented with the ISSO. Edit the run control script and remove any empty entry that is defined.