The organization must review and analyze Voice Video system Call Detail Records (CDRs) at least every seven days for indications of inappropriate or unusual activity.

From Voice Video Policy Security Technical Implementation Guide

Part of SRG-POL-300154

Associated with: CCI-000148

VVSP-01-000037_rule The organization must review and analyze Voice Video system Call Detail Records (CDRs) at least every seven days for indications of inappropriate or unusual activity.

Vulnerability discussion

Audit review, analysis, and reporting covers information security-related auditing performed by organizations including, for example, auditing that results from monitoring of account usage, remote access, wireless connectivity, mobile device connection, configuration settings, system component inventory, use of maintenance tools and nonlocal maintenance, physical access, temperature and humidity, equipment delivery and removal, communications at the information system boundaries, use of mobile code, and use of VoIP.Findings can be reported to organizational entities that include, for example, incident response team, help desk, and information security group/department. If organizations are prohibited from reviewing and analyzing audit information or unable to conduct such activities (e.g., in certain national security applications or systems), the review/analysis may be carried out by other organizations granted such authority.For Voice Video systems, session events produce CDRs used for traffic and forensic analysis. The CDR contains the who, what, where, when, and how for the Voice Video elements handling signaling and media traffic. The loss or alteration of these records could allow an adversary to perform attacks undetected.

Check content

Review the CDR policy and supporting documentation to confirm the organization reviews and analyzes Voice Video system CDRs at least every seven days for indications of inappropriate or unusual activity. If the organization does not review and analyze all Voice Video system CDRs at least every seven days for indications of inappropriate or unusual activity, this is a finding.

Fix text

Document in the CDR policy or supporting documentation the reviews and analysis of Voice Video system CDRs at least every seven days for indications of inappropriate or unusual activity. Maintain an audit trail of review and update activity.

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