Title

Local initialization files lists of preloaded libraries must contain only authorized paths. (Cat II impact)

Discussion

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.

Check Content

NOTE: The following must be done in the BASH shell Verify local initialization files have library preload list containing only authorized paths. # cut -d : -f 1 /etc/passwd | xargs -n1 -IUSER sh -c 'grep -l LD_PRELOAD ~USER/.*' 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

Edit the local initialization file and remove the relative path entries from the library preload variables that have not been documented with the ISSO. Edit the local initialization file(s) and remove any empty entry that is defined.

Additional Identifiers

Rule ID: SV-227684r603266_rule

Vulnerability ID: V-227684

Group Title: SRG-OS-000480

Expert Comments

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