Horizon Alert
Summary of the vulnerability and why it matters
This advisory addresses a critical vulnerability in a PHP application, specifically the ShiftCV theme up to version 3.0.14, that allows unauthenticated users to inject malicious code. This could potentially lead to unauthorized access and control over affected systems.
- Unauthenticated code injection in PHP applications.
- Critical risk of unauthorized access and control.
- Confirm relevance and exposure for impacted systems.
Attack Path
How an attacker could exploit the issue
An attacker could exploit an unauthenticated PHP object injection vulnerability in the ShiftCV theme to execute arbitrary code. This could happen if the theme is exposed to the internet and receives specially crafted input, allowing the attacker to potentially take control of the affected website.
- No authentication required.
- Specially crafted input is sent.
- Remote code execution on the site.
Live Threat
Current exploitation, exposure, and threat context
Unauthenticated PHP Object Injection in ShiftCV could allow an attacker to execute arbitrary code, potentially leading to a complete compromise of the affected website. This could occur when the application deserializes untrusted user-supplied data.
- Website files and configuration.
- Via network requests to the application.
- Complete website compromise.
Operational Fix
Recommended remediation, mitigation, and detection steps
Security and application teams should prioritize identifying all instances of ShiftCV, confirming their exposure and business criticality, and assigning ownership for remediation planning. The first practical step involves locating the affected technology, assessing its reachability and importance, and then engaging the accountable owner to schedule corrective actions based on assessed risk.
- Application or platform owners.
- Verify external reachability and business impact.
- Plan remediation, coordinating with vendor if needed.
