The welcome and about page includes version and revision information about the software in use (including library and components used). This information is sensitive from a security point of view because it allows software used by the server to be easily identified.
Multiple OGC request parameters allow Remote Code Execution (RCE) by unauthenticated users through specially crafted input against a default GeoServer installation due to unsafely evaluating property names as XPath expressions.
If GeoServer is deployed in the Windows operating system using an Apache Tomcat web application server, it is possible to bypass existing input validation in the GeoWebCache ByteStreamController class and read arbitrary classpath resources with specific file name extensions. If GeoServer is also deployed as a web archive using the data directory embedded in the geoserver.war file (rather than an external data directory), it will likely be possible to read …
GeoServer's Server Status page and REST API (at /geoserver/rest/about/status) lists all environment variables and Java properties to any GeoServer user with administrative rights as part of those modules' status message. These variables/properties can also contain sensitive information, such as database passwords or API keys/tokens, for example: Data stores defined with parameterized catalog settings (-DALLOW_ENV_PARAMETRIZATION=true) which need a password or access key. GeoServer's official Docker image uses environment variables to configure …
Withdrawn This advisory has been withdrawn as there the effects of the bug would only give the caller an incomplete view of data which they would be authorized to see. Original Advisory PartialBufferOutputStream2 in GeoServer before 1.6.1 and 1.7.0-beta1 attempts to flush buffer contents even when it is handling an "in memory buffer," which prevents the reporting of a service exception, with unknown impact and attack vectors.