From Oracle Linux 5 Security Technical Implementation Guide
Part of GEN001840
Associated with: CCI-000366
The executable search path (typically the PATH environment variable) contains a list of directories for the shell to search to find executables. If this path includes the current working directory or other relative paths, executables in these directories may be executed instead of system commands. This variable is formatted as a colon-separated list of directories, such as a leading or trailing colon, two consecutive colons, or a single period, this is interpreted as the current working directory. Paths starting with a slash (/) are absolute paths.
Check the global initialization files' executable search paths. Procedure: # grep PATH /etc/bashrc /etc/csh.cshrc /etc/csh.login /etc/csh.logout /etc/environment /etc/ksh.kshrc /etc/profile /etc/suid_profile /etc/profile.d/* This variable is formatted as a colon-separated list of directories. Such as a leading or trailing colon, two consecutive colons, or a single period 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.
Edit the global initialization file(s) with PATH variables containing relative paths and remove any relative path from the PATH variables that have not been authorized by the ISSO. Remove any empty path entries that are defined in these files.
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