WARNING THIS IS A EXPERIMENTAL object
We have not been able to test, simulate, or build datasets for this object. Use at your own risk. This analytic is NOT supported.
This search detects the heap-based buffer overflow of sudoedit
- Type: TTP
Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
- Last Updated: 2021-01-28
- Author: Shannon Davis, Splunk
- ID: 1de31d5d-8fa6-4ee0-af89-17069134118a
|T1068||Exploitation for Privilege Escalation||Privilege Escalation|
Kill Chain Phase
- CIS 8
- CIS 12
- CIS 16
1 2 3 `osquery_process` | search "columns.cmdline"="sudoedit -s \\*" | `detect_baron_samedit_cve_2021_3156_via_osquery_filter`
The SPL above uses the following Macros:
Note that detect_baron_samedit_cve-2021-3156_via_osquery_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.
How To Implement
OSQuery installed and configured to pick up process events (info at https://osquery.io) as well as using the Splunk OSQuery Add-on https://splunkbase.splunk.com/app/4402. The vulnerability is exposed when a non privledged user tries passing in a single \ character at the end of the command while using the shell and edit flags.
Known False Positives
Associated Analytic story
source | version: 1