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.
- Type: Anomaly
- Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
- Datamodel: Web
- Last Updated: 2024-05-19
- Author: Michael Haag, Splunk
- ID: 9e5726fe-8fde-460e-bd74-cddcf6c86113
Annotations
ATT&CK
Kill Chain Phase
- Delivery
- Installation
NIST
- DE.AE
CIS20
- CIS 13
CVE
Search
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| 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
| `drop_dm_object_name("Web")`
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`
| `vmware_workspace_one_freemarker_server_side_template_injection_filter`
Macros
The SPL above uses the following Macros:
vmware_workspace_one_freemarker_server-side_template_injection_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.
Required fields
List of fields required to use this analytic.
- Web.http_method
- Web.url
- Web.url_length
- Web.src
- Web.dest
- Web.http_user_agent
How To Implement
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
RBA
Risk Score | Impact | Confidence | Message |
---|---|---|---|
49.0 | 70 | 70 | An attempt to exploit a VMware Server Side Injection CVE-2022-22954 on $dest$ has occurred. |
The Risk Score is calculated by the following formula: Risk Score = (Impact * Confidence/100). Initial Confidence and Impact is set by the analytic author.
Reference
- https://www.cisa.gov/uscert/ncas/alerts/aa22-138b
- https://github.com/wvu/metasploit-framework/blob/master/modules/exploits/linux/http/vmware_workspace_one_access_cve_2022_22954.rb
- https://github.com/sherlocksecurity/VMware-CVE-2022-22954
- https://www.vmware.com/security/advisories/VMSA-2022-0011.html
- https://attackerkb.com/topics/BDXyTqY1ld/cve-2022-22954/rapid7-analysis
Test Dataset
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 | version: 2