Winlogbeat versions before 5.6.16 and 6.6.2 had an insufficient logging flaw. An attacker able to inject certain characters into a log entry could prevent Winlogbeat from recording the event.
When a security-critical event occurs, the product either does not record the event or omits important details about the event when logging it.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Winlogbeat | Elastic | * | 5.6.16 (excluding) |
| Winlogbeat | Elastic | 6.0.0 (including) | 6.6.2 (excluding) |
When security-critical events are not logged properly, such as a failed login attempt, this can make malicious behavior more difficult to detect and may hinder forensic analysis after an attack succeeds. As organizations adopt cloud storage resources, these technologies often require configuration changes to enable detailed logging information, since detailed logging can incur additional costs. This could lead to telemetry gaps in critical audit logs. For example, in Azure, the default value for logging is disabled.