Horizon Alert
Summary of the vulnerability and why it matters
A vulnerability was identified in the JSONata processing library that could allow for the execution of arbitrary code if an attacker can supply a crafted expression. This impacts systems that use certain versions of the library to process JSON data. The primary concern is to confirm if this specific technology is in use and if it is exposed to the necessary conditions for an attack.
- Crafted expressions allow arbitrary code execution.
- Critical vulnerability in common JSON data processing.
- Confirm relevance and assess potential exposure.
Attack Path
How an attacker could exploit the issue
An attacker who can provide crafted JSONata expressions to a vulnerable application can exploit a flaw in how the `lookup` function handles object properties. By leveraging inherited prototype members, constructor access, or other mechanisms, an attacker could potentially execute arbitrary code on the host system with the same permissions as the running application.
- Attacker supplies malicious expression.
- Vulnerable function lacks prototype check.
- Arbitrary code execution is possible.
Live Threat
Current exploitation, exposure, and threat context
When supported by the advisory, a crafted JSONata expression could allow an attacker to execute arbitrary code with the privileges of the host process, potentially impacting the confidentiality, integrity, and availability of the system.
- System data and application logic.
- Supplying a crafted JSONata expression.
- Arbitrary code execution.
Operational Fix
Recommended remediation, mitigation, and detection steps
The JSONata library, used for JSON query and transformation, has a critical vulnerability that allows for arbitrary code execution. Teams responsible for applications, platforms, or services that utilize JSONata for processing user-supplied expressions must act swiftly. The initial step involves identifying all instances of the affected JSONata versions, assessing their exposure and criticality, and locating the accountable owner before planning remediation.
- Application and platform owners should manage the remediation.
- Verify JSONata usage and expression input sources.
- Plan upgrades or implement mitigating controls.
