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GHSA-5pr3-m5hm-9956
No affected components available
Summary
The OGC Web Processing Service (WPS) specification is designed to process information from any server using GET and POST requests.
This presents the opportunity for Server Side Request Forgery.
Details
This vulnerability requires:
- The WPS extension to be installed
- The WPS security setting "Disable complex inputs" to be unselected
- Security URL checks to be disabled
Impact
This vulnerability presents the opportunity for Server Side Request Forgery.
Mitigation
The ability to reference an external URL location is defined by the WPS standard Execute operation. This operations is defined by an Industry and International standard and cannot be redefined by the GeoServer application in isolation.
To disable complex remote inputs on GeoServer 2.20.5 and GeoServer 2.21.0:
- Navigate to Security > WPS Security page
- Locate Complex Inputs heading
- Select the check box for Disable loading complex inputs from remote references
Resolution
To allow processing of complex inputs safely in GeoServer 2.22.5 and GeoServer 2.23.2:
- Navigate to Security > URL Checks
- Enable URL Checks are enabled setting
- Check the user manual for examples of how to trust specific locations for your external services.
Processing of complex inputs safely is on by default in GeoServer 2.24.0.
References
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a low impact on the integrity of the data. There is a low impact on the availability of the system.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
The exploit probability is very high. The vulnerability is very likely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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