Horizon Alert
Summary of the vulnerability and why it matters
The PHP CGI script contains a flaw in how it handles web addresses with specific characters. This weakness could allow an unauthorized entity to run their own commands on affected systems. The primary business impact is the potential for attackers to gain control of systems, leading to data theft, disruption of services, or the introduction of malicious software.
- Vulnerable: PHP CGI script
- Weakness: Improper query string handling
- Impact: Arbitrary code execution
Attack Path
How an attacker could exploit the issue
This vulnerability affects organizations that utilize PHP configured as a CGI script. Attackers can exploit a weakness in how query strings are handled to execute arbitrary code on affected systems. This could lead to unauthorized access, data compromise, or disruption of services.
- Exposure condition: PHP configured as CGI.
- Attacker starting point: Remote.
- Trigger and result: Malformed query string leads to code execution.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability could allow remote attackers to execute arbitrary code. It impacts organizations using PHP configured as a CGI script without specific security updates. The exploitation allows for significant impact on affected systems and data, posing a considerable business risk.
- Attackers require low skill.
- Exploitation is possible remotely.
- Business risk is high.
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability allows remote attackers to execute arbitrary code when PHP is configured as a CGI script. The issue stems from improper handling of query strings that lack an equals sign. This could impact organizations by allowing attackers to compromise systems and execute malicious commands.
- Find affected PHP installations.
- Isolate exposed PHP-CGI services.
- Apply vendor updates and verify.
- Monitor for related activity.
