Title

Local initialization files' lists of preloaded libraries must contain only absolute 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 relative to the current working directory, 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

Verify local initialization files have library preload list path containing only absolute paths. # cat /etc/passwd | cut -f 1,1 -d ":" | xargs -n1 -IUSER sh -c 'grep "LD_PRELOAD" ~USER/.*' The LD_PRELOAD variable is a colon-delimited directory list. An empty entry is defined by a leading/trailing colon or two consecutive colons. A relative path is defined as an entry beginning with a character other than a slash (/). If an empty or relative path is defined in the LD_PRELOAD variable, this is a finding.

Fix Text

Edit the local initialization file and remove any relative/empty path entry from the library LD_PRELOAD variable.

Additional Identifiers

Rule ID: SV-34928r1_rule

Vulnerability ID: V-22364

Group Title: GEN001902

Expert Comments

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