Horizon Alert
Summary of the vulnerability and why it matters
This critical vulnerability in Adminer, a widely used web-based database management tool, could allow unauthenticated attackers to execute arbitrary code on affected systems by injecting malicious parameters. The issue stems from improper handling of server information, enabling the creation of specially crafted requests that could lead to remote code execution if the resulting trace file is accessed.
- Attackers can run code on web servers.
- It impacts systems with public-facing database tools.
- Verify if Adminer is deployed in your environment.
Attack Path
How an attacker could exploit the issue
An unauthenticated attacker can exploit this vulnerability by sending specially crafted requests to the Adminer web interface. By manipulating the server field in the request, an attacker can inject malicious ODBC parameters, specifically `TraceFile` and `TraceOn`. This allows them to write PHP code to the web server's root directory. When the generated trace file is accessed, it can lead to remote code execution.
- No authentication required.
- Inject ODBC parameters in server field.
- Achieve remote code execution.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability could allow unauthenticated attackers to execute arbitrary code on the server when specific conditions are met, potentially impacting the integrity and availability of the affected system. The attack involves injecting malicious parameters into a PDO DSN string, which, when processed, can lead to the creation of a trace file containing PHP code. If this trace file is then accessed, the injected code could be executed, granting the attacker control over the web root.
- PHP code could be written to the web root.
- Malicious parameters injected into PDO DSN string.
- Attacker gains remote code execution.
Operational Fix
Recommended remediation, mitigation, and detection steps
Application owners and infrastructure teams are likely responsible for addressing this vulnerability in Adminer, as it involves a web-accessible tool for database management. The first practical step is to identify all instances of Adminer, determine their reachability and business criticality, and confirm the accountable owner for each. Subsequently, a remediation plan can be developed based on the assessed risk.
- Confirm Adminer deployment and accountability.
- Verify exposure and business impact.
- Plan coordinated remediation or mitigation.
