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V-205028

CAT II (Medium)

The ALG must reveal error messages only to the ISSO, ISSM, and SCA.

Rule ID

SV-205028r396459_rule

STIG

Application Layer Gateway Security Requirements Guide

Version

V2R3

CCIs

CCI-001314

Discussion

Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can give configuration details about the network element. Limiting access to system logs and administrative consoles to authorized personnel will help to mitigate this risk. However, user feedback and error messages should also be restricted by type and content in accordance with security best practices (e.g., ICMP messages).

Check Content

Verify the ALG reveals error messages only to the ISSO, ISSM, and SCA.

If the ALG does not reveal error messages only to the ISSO, ISSM, and SCA, this is a finding.

Fix Text

Configure the ALG to reveal error messages only to the ISSO, ISSM, and SCA.