Horizon Alert
Summary of the vulnerability and why it matters
A vulnerability in the Pimcore platform could allow unauthorized users to execute arbitrary code or write files on affected systems. This occurs when the platform improperly handles data serialization, which may be exploited by attackers who can inject malicious data into specific fields. The main concern is confirming relevance and exposure.
- Vulnerability allows code execution or file writes.
- Affects how data is handled and stored.
- Confirm if our environment is impacted.
Attack Path
How an attacker could exploit the issue
An attacker can exploit this vulnerability by writing malicious serialized PHP data into a specific data column within Pimcore. When this data is later processed by an affected DataObject, the application attempts to unserialize the input without proper restrictions, potentially leading to arbitrary file writes or code execution by leveraging existing class structures and their magic methods. This attack can be chained with the ImageGallery, Block, and Video components due to similar fallback patterns, although only the Hotspotimage component has a confirmed fix.
- Unrestricted writing of serialized data.
- Triggered by loading affected DataObjects.
- Potential for arbitrary file writes or code execution.
Live Threat
Current exploitation, exposure, and threat context
When an attacker can write to a specific column, they could potentially execute arbitrary code or write files to the system. This could occur if an attacker can control the data written to the `__hotspots` column, and then trigger the loading of an affected `DataObject`. The consequences depend on the attacker's ability to provide valid gadget chains.
- Arbitrary file writes or code execution.
- Via crafted data in a specific column.
- Compromise of system integrity.
Operational Fix
Recommended remediation, mitigation, and detection steps
Teams responsible for managing Pimcore instances, potentially including application owners, platform engineers, or infrastructure teams, must first identify all deployments of the affected technology to assess reachability and business criticality. Subsequently, coordinating with the accountable owner to plan a risk-based remediation strategy is crucial.
- Application owners should own the issue.
- Verify if Hotspotimage data is writable.
- Plan maintenance for Hotspotimage remediation.
