use of the monitoring console where the less-than sign (<) is the first character in the description field.

t1189
endpoint
splunk

Techniques

T1189

Sample rules

Splunk XSS in Monitoring Console

source: splunk
technicques:
- T1189

Description

On May 3rd, 2022, Splunk published a security advisory for a reflective Cross-Site Scripting (XSS) vulnerability stemming from the lack of input validation in the Distributed Monitoring Console app. This detection will alert on attempted exploitation in patched versions of Splunk as well as actual exploitation in unpatched version of Splunk.

Detection logic

 `splunkd_web` method="GET" uri_query="description=%3C*" 
| table _time host status clientip user uri 
| `splunk_xss_in_monitoring_console_filter`