GeoServer up to 2.23.3/2.24.0 REST Coverage Store API unrestricted upload

Summaryinfo

A vulnerability marked as critical has been reported in GeoServer up to 2.23.3/2.24.0. This affects an unknown function of the component REST Coverage Store API. This manipulation causes unrestricted upload. This vulnerability is registered as CVE-2023-51444. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in GeoServer up to 2.23.3/2.24.0 and classified as critical. Affected by this vulnerability is an unknown code of the component REST Coverage Store API. The manipulation with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. An arbitrary file upload vulnerability exists in versions prior to 2.23.4 and 2.24.1 that enables an authenticated administrator with permissions to modify coverage stores through the REST Coverage Store API to upload arbitrary file contents to arbitrary file locations which can lead to remote code execution. Coverage stores that are configured using relative paths use a GeoServer Resource implementation that has validation to prevent path traversal but coverage stores that are configured using absolute paths use a different Resource implementation that does not prevent path traversal. This vulnerability can lead to executing arbitrary code. An administrator with limited privileges could also potentially exploit this to overwrite GeoServer security files and obtain full administrator privileges. Versions 2.23.4 and 2.24.1 contain a fix for this issue.

The advisory is shared at github.com. This vulnerability is known as CVE-2023-51444 since 12/19/2023. The exploitation appears to be easy. The attack can be launched remotely. The exploitation requires an enhanced level of successful authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1608.002 for this issue.

Upgrading to version 2.23.4 or 2.24.1 eliminates this vulnerability. Applying the patch ca683170c669718cb6ad4c79e01b0451065e13b8 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

• GeoServer

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.23.0
• 2.23.1
• 2.23.2
• 2.23.3
• 2.24.0

License

• open-source

Website

• Product: https://github.com/geoserver/geoserver/

CPE 2.3info

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CPE 2.2info

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