Horizon Alert
Summary of the vulnerability and why it matters
A critical vulnerability exists in the math-codegen library, allowing attackers to execute arbitrary commands on affected systems. This occurs when user-supplied input is not properly sanitized before being used in code generation, potentially leading to full remote code execution. Any application using this library for evaluating mathematical expressions with user input should be reviewed.
- Attackers can gain full control.
- Affects systems processing user input.
- Requires no special privileges to exploit.
Attack Path
How an attacker could exploit the issue
An attacker can exploit this by sending a crafted mathematical expression to an application using a vulnerable version of math-codegen. The application will then inject this malicious input directly into a `Function()` constructor without proper validation, allowing arbitrary code execution on the server. This can lead to full remote code execution (RCE) if the application exposes an endpoint that processes user input via `cg.parse()`.
- No authentication required.
- Vulnerable endpoint processes input.
- User-controlled input reaches parser.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability allows for arbitrary command execution by injecting malicious code into string literals processed by the math-codegen library. Attackers are likely to target this if it's exposed through public-facing web applications that evaluate user-provided mathematical expressions.
- No KEV listing or public exploit reports.
- Patch released recently.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
Prioritize patching or upgrading math-codegen to version 0.4.3 immediately to prevent remote code execution. If immediate patching is not feasible, isolate services that process user input through the `cg.parse()` function to prevent exploitation. Monitor network traffic for any unusual outbound connections or suspicious command execution patterns originating from affected systems.
- Upgrade math-codegen to version 0.4.3.
- Isolate affected services from untrusted input.
- Monitor for suspicious command execution.
