SharePoint must protect audit information from unauthorized deletion of trace log files.

From MS SharePoint 2010 Security Technical Implementation Guide

Part of SRG-APP-000120-COL-000092

Associated with: CCI-000164

SV-39943r2_rule SharePoint must protect audit information from unauthorized deletion of trace log files.

Vulnerability discussion

If audit data were to become compromised then competent forensic analysis and discovery of the true source of potentially malicious system activity is impossible to achieve.To ensure the veracity of audit data the information system and/or SharePoint must protect audit information from unauthorized deletion. SharePoint is an integrated product with comprehensive built-in auditing capabilities that works with the Windows system event log. Additional trace logs and usage logs are created by the application and are placed in a designated folder. Logs of actions taken by users of site content (editing, modifying, viewing, deleting, etc.) are stored in a SQL database.

Check content

Verify security permissions to log file are to authorized administrators only. 1. In Central Administration, click Monitoring. 2. On the Monitoring page, in the Reporting list, click Configure diagnostic logging. 3. Obtain the Path location for the Trace Log. 4. Navigate to the file location, right-click, and select Properties. View the Security tab. 5. Verify permissions include only the LOCAL SERVICE, WSS_ADMIN_WPG, WSS_RESTRICTED_WPG_V4, WSS_WPG, local Administrators group, and SYSTEM group.. 6. Mark as a finding if groups or users other than the LOCAL SERVICE, WSS_ADMIN_WPG, WSS_RESTRICTED_WPG_V4, WSS_WPG, local Administrators group, and SYSTEM group have permission to the log folder.

Fix text

Change permissions to the directory where trace data logs are stored. 1. In Central Administration, click Monitoring. 2. On the Monitoring page, in the Reporting list, click Configure diagnostic logging. 3. Obtain the Path location for the Trace Log. 4. Navigate to the file location, right-click, and select Properties. View the Security tab. 5. Delete any groups or users other than the LOCAL SERVICE, WSS_ADMIN_WPG, WSS_RESTRICTED_WPG_V4, WSS_WPG, local Administrators group, and SYSTEM group from the permissions list.

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