Splunk Search

How to search for DR string ../../../../ ??

ShinR
Explorer

Hi everyone,

I just wanted to do a quick search in URLs requested in Splunk but cannot get the directory traversal string  (../../../../ o similar) to stick - it gets stripped from the query.  I've tried using quotes and it seems escaping shouldn't be necessary.  

Any suggestions?

Thanks

 

Labels (1)
0 Karma

richgalloway
SplunkTrust
SplunkTrust

Please share the troublesome query.

---
If this reply helps you, Karma would be appreciated.

ShinR
Explorer

Sorry, here's a simple example:

index=* url="*../../../../*"

or 

index=* "../../../../"

0 Karma

richgalloway
SplunkTrust
SplunkTrust

I believe the problem is attempting to search for a string of minor blocker characters.  You may have better luck using a separate where command.

 

index=foo ```Always use explicit index names```
| where like(url, "../../../../%") ```Like is used instead of match to avoid escaping every character```

 

---
If this reply helps you, Karma would be appreciated.

ShinR
Explorer

Thanks again for the suggestion.  Unfortunately everything between the * and the % gets stripped when I execute the search.  

0 Karma

richgalloway
SplunkTrust
SplunkTrust

The asterisk was a typo.  Please try again without it.  

---
If this reply helps you, Karma would be appreciated.
0 Karma

ShinR
Explorer

Same result unfortunately... does the same thing not happen on your splunk instance?

 

 

0 Karma

richgalloway
SplunkTrust
SplunkTrust

It does not happen on my instance (8.1.2)

richgalloway_0-1629115577281.png

 

---
If this reply helps you, Karma would be appreciated.
0 Karma

NatSec
Explorer

I have the same issue on Splunk v8.2.1

Any solution please?

0 Karma
Get Updates on the Splunk Community!

Archived Metrics Now Available for APAC and EMEA realms

We’re excited to announce the launch of Archived Metrics in Splunk Infrastructure Monitoring for our customers ...

Detecting Remote Code Executions With the Splunk Threat Research Team

WATCH NOWRemote code execution (RCE) vulnerabilities pose a significant risk to organizations. If exploited, ...

Enter the Dashboard Challenge and Watch the .conf24 Global Broadcast!

The Splunk Community Dashboard Challenge is still happening, and it's not too late to enter for the week of ...