ID | Technique | Tactic |
---|---|---|
T1190 | Exploit Public-Facing Application | Initial Access |
T1133 | External Remote Services | Initial Access |
Detection: VMware Workspace ONE Freemarker Server-side Template Injection
Description
The following analytic detects server-side template injection attempts related to CVE-2022-22954 in VMware Workspace ONE. It leverages web or proxy logs to identify HTTP GET requests to the endpoint catalog-portal/ui/oauth/verify with the freemarker.template.utility.Execute command. This activity is significant as it indicates potential exploitation attempts that could lead to remote code execution. If confirmed malicious, an attacker could execute arbitrary commands on the server, leading to full system compromise, data exfiltration, or further lateral movement within the network.
Search
1
2| tstats count from datamodel=Web where Web.http_method IN ("GET") Web.url="*/catalog-portal/ui/oauth/verify?error=&deviceudid=*" AND Web.url="*freemarker.template.utility.Execute*" by Web.http_user_agent Web.http_method, Web.url,Web.url_length Web.src, Web.dest sourcetype
3| `drop_dm_object_name("Web")`
4| `security_content_ctime(firstTime)`
5| `security_content_ctime(lastTime)`
6| `vmware_workspace_one_freemarker_server_side_template_injection_filter`
Data Source
Name | Platform | Sourcetype | Source | Supported App |
---|---|---|---|---|
Palo Alto Network Threat | Network | 'pan:threat' |
'pan:threat' |
N/A |
Macros Used
Name | Value |
---|---|
security_content_ctime | convert timeformat="%Y-%m-%dT%H:%M:%S" ctime($field$) |
vmware_workspace_one_freemarker_server_side_template_injection_filter | search * |
vmware_workspace_one_freemarker_server_side_template_injection_filter
is an empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.
Annotations
Default Configuration
This detection is configured by default in Splunk Enterprise Security to run with the following settings:
Setting | Value |
---|---|
Disabled | true |
Cron Schedule | 0 * * * * |
Earliest Time | -70m@m |
Latest Time | -10m@m |
Schedule Window | auto |
Creates Risk Event | True |
Implementation
To successfully implement this search, you need to be ingesting web or proxy logs, or ensure it is being filled by a proxy like device, into the Web Datamodel. For additional filtering, allow list private IP space or restrict by known good.
Known False Positives
False positives may be present if the activity is blocked or was not successful. Filter known vulnerablity scanners. Filter as needed.
Associated Analytic Story
Risk Based Analytics (RBA)
Risk Message | Risk Score | Impact | Confidence |
---|---|---|---|
An attempt to exploit a VMware Server Side Injection CVE-2022-22954 on $dest$ has occurred. | 49 | 70 | 70 |
References
-
https://www.vmware.com/security/advisories/VMSA-2022-0011.html
-
https://attackerkb.com/topics/BDXyTqY1ld/cve-2022-22954/rapid7-analysis
Detection Testing
Test Type | Status | Dataset | Source | Sourcetype |
---|---|---|---|---|
Validation | ✅ Passing | N/A | N/A | N/A |
Unit | ✅ Passing | Dataset | pan:threat |
pan:threat |
Integration | ✅ Passing | Dataset | pan:threat |
pan:threat |
Replay any dataset to Splunk Enterprise by using our replay.py
tool or the UI.
Alternatively you can replay a dataset into a Splunk Attack Range
Source: GitHub | Version: 2