Horizon Alert
Summary of the vulnerability and why it matters
The Embedthis GoAhead web server contains a vulnerability that can allow for remote code execution. This flaw arises when the server initializes the environment for CGI scripts, using information from untrusted HTTP requests. When combined with specific system configurations, an attacker could potentially execute arbitrary code on the affected system.
- Vulnerable component: Embedthis GoAhead web server
- Core weakness: Untrusted request data used for script initialization
- Main business impact: Unauthorized code execution on servers
Attack Path
How an attacker could exploit the issue
This vulnerability could allow an attacker to execute arbitrary code on a target system. The attack requires that the Common Gateway Interface (CGI) functionality is enabled and that a CGI program is dynamically linked. An attacker could exploit this by sending specially crafted HTTP request parameters to the server. Successful exploitation could lead to the attacker gaining control over the affected system.
- CGI enabled and dynamically linked.
- Attacker sends malicious HTTP request.
- Attacker gains remote code execution.
Live Threat
Current exploitation, exposure, and threat context
The identified vulnerability could allow attackers to execute arbitrary code on affected systems, potentially leading to unauthorized access and control. This poses a significant risk to organizations relying on the impacted software. The vulnerability has been documented as actively exploited.
- Attackers with high skill required.
- CGI enabled and dynamic linking needed.
- Business risk is urgent.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability, affecting Embedthis GoAhead software when CGI is enabled, presents a significant risk of remote code execution. Attackers can exploit this by initializing CGI script environments using untrusted HTTP request parameters, which, when combined with the glibc dynamic linker, can be abused to execute arbitrary code. This scenario allows for the potential compromise of systems through specially crafted requests.
- Find affected assets
- Reduce exposure or isolate risk
- Fix, verify, and monitor
