Headline
GHSA-gr67-pwcv-76gf: GeoServer Infinite Loop Vulnerability in Jiffle process
Summary
Malicious Jiffle scripts can be executed by GeoServer, either as a rendering transformation in WMS dynamic styles or as a WPS process, that can enter an infinite loop to trigger denial of service.
Details
The Jiffle language supports multiple loop constructs that will cause its code block to be continuously executed until a certain condition is met. The Jiffle runtime should be updated to throw an exception if the script exceeds a certain number of loop iterations.
Impact
This vulnerability allows attackers to conduct denial-of-service attacks.
Mitigation
This vulnerability can be mitigated by disabling WMS dynamic styling (see WMS Settings). If the WPS extension is installed, the Jiffle process must also be disabled to mitigate this vulnerability (see WPS Settings)
References
https://github.com/geosolutions-it/jai-ext/pull/307 https://osgeo-org.atlassian.net/browse/GEOS-11778
Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.