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Check: GEN005770

HP-UX 11.23 STIG: GEN005770 (in version v1 r8)

Title

The NFS exports configuration file must not have an extended ACL. (Cat III impact)

Discussion

File system extended ACLs provide access to files beyond what is allowed by the mode numbers of the files. Excessive permissions on the NFS export configuration file could allow unauthorized modification of the file, which could result in Denial of Service to authorized NFS exports and the creation of additional unauthorized exports.

Check Content

Check the mode of the NFS export configuration file. # echo `ls -lL /etc/dfs/dfstab` | sed -e 's/^[ \t]*//' | tr '\011' ' ' | tr -s ' ' | cut -f 1,1 -d " " If the permissions include a + the file has an extended ACL, this is a finding.

Fix Text

Remove the optional ACL from the file. # chacl -z /etc/dfs/dfstab

Additional Identifiers

Rule ID: SV-26817r1_rule

Vulnerability ID: V-22493

Group Title: GEN005770

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-000225	Employ the principle of least privilege, allowing only authorized accesses for users (or processes acting on behalf of users) which are necessary to accomplish assigned organizational tasks.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
AC-6	Least Privilege