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Splunk RCE Through Arbitrary File Write to Windows System Root

In Splunk Enterprise for Windows versions below 9.3.0, 9.2.3, and 9.1.6, a low-privileged user that does not hold the “admin” or “power” Splunk roles could write a file to the Windows system root directory, which…

Description

In Splunk Enterprise for Windows versions below 9.3.0, 9.2.3, and 9.1.6, a low-privileged user that does not hold the “admin” or “power” Splunk roles could write a file to the Windows system root directory, which has a default location of C:\Windows\System32, when Splunk Enterprise for Windows is installed on a separate drive. Additionally, this user may be able to upload and execute code due to insecure session storage configuration

Detection logic

Detection requirements

Platform
ESXiLinuxmacOSWindows

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Log source category
splunk

Known benign triggers

  • This search may produce false positives as it is not possible to analyze the contents of an App Creation. This only applies to Splunk installations on Microsoft Windows where installation is placed on a different root directory like e or d.

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