IBM z/OS HFS objects for the z/OS UNIX Telnet Server must be properly protected.
An XCCDF Rule
Description
<VulnDiscussion>HFS directories and files of the z/OS UNIX Telnet Server provide the configuration and executable properties of this product. Failure to properly secure these objects may lead to unauthorized access resulting in the compromise of the integrity and availability of the operating system environment, ACP, and customer data. Satisfies: SRG-OS-000080-GPOS-00048, SRG-OS-000259-GPOS-00100</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-223865r604139_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
With the assistance of a systems programmer with UID(0) and/or SUPERUSER access, will review the UNIX permission bits and user audit bits on the HFS directories and files for the z/OS UNIX Telnet Server. Ensure they conform to the specifications below:
z/OS UNIX TELNET Server HFS Object Security Settings
File Permission Bits User Audit Bits
/usr/sbin/otelnetd 1740 fff
/etc/banner 0744 faf