V-216198

Discussion

There are valid reasons for SUID/SGID programs, but it is important to identify and review such programs to ensure they are legitimate.

Check Content

The root role is required.

# find / \( -fstype nfs -o -fstype cachefs -o -fstype autofs \
-o -fstype ctfs -o -fstype mntfs -o -fstype objfs \
-o -fstype proc \) -prune -o -type f -perm -4000 -o \
-perm -2000 -print

Output should only be Solaris-provided files and approved customer files.

Solaris-provided SUID/SGID files can be listed using the command: 

# pkg contents -a mode=4??? -a mode=2??? -t file -o pkg.name,path,mode

Digital signatures on the Solaris Set-UID binaries can be verified with the elfsign utility, such as this example:

# elfsign verify -e /usr/bin/su
elfsign: verification of /usr/bin/su passed.

This message indicates that the binary is properly signed.

If non-vendor provided or non-approved files are included in the list, this is a finding.