CVE-2019-10068 in Kentico
Summary
by MITRE
An issue was discovered in Kentico 12.0.x before 12.0.15, 11.0.x before 11.0.48, 10.0.x before 10.0.52, and 9.x versions. Due to a failure to validate security headers, it was possible for a specially crafted request to the staging service to bypass the initial authentication and proceed to deserialize user-controlled .NET object input. This deserialization then led to unauthenticated remote code execution on the server where the Kentico instance was hosted.
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Analysis
by VulDB Data Team • 11/06/2025
The vulnerability identified as CVE-2019-10068 represents a critical security flaw in the Kentico content management system affecting multiple version ranges including 12.0.x before 12.0.15, 11.0.x before 11.0.48, 10.0.x before 10.0.52, and various 9.x versions. This vulnerability stems from inadequate validation of security headers within the staging service component of the application. The flaw creates a dangerous pathway where attackers can bypass initial authentication mechanisms through carefully crafted requests, effectively undermining the system's access control measures. The vulnerability manifests when the staging service processes requests without proper header validation, allowing malicious actors to manipulate the authentication flow and gain unauthorized access to system resources.
The technical implementation of this vulnerability involves a dangerous combination of weak input validation and insecure deserialization practices. When a specially crafted request reaches the staging service, the system fails to properly validate security headers that should normally enforce authentication requirements. This failure allows the attacker to bypass the initial authentication check and proceed to a stage where user-controlled .NET object input is deserialized. The deserialization process becomes the critical attack vector where the malicious payload executes with the privileges of the web application, leading to complete system compromise. This type of vulnerability aligns with CWE-502 which specifically addresses "Deserialization of Untrusted Data" and represents a classic example of how insecure deserialization can lead to remote code execution. The attack chain demonstrates the principle of privilege escalation through improper input validation and the dangerous implications of allowing untrusted data to be processed through deserialization mechanisms.
The operational impact of CVE-2019-10068 is severe and far-reaching for organizations using affected Kentico versions. Unauthenticated remote code execution provides attackers with complete control over the affected server, enabling them to execute arbitrary commands, access sensitive data, modify content, and potentially use the compromised system as a launching point for further attacks within the network. The vulnerability affects the core staging service functionality, which is typically used for previewing content before publication, making it a critical component that attackers can exploit to gain unauthorized access to content management capabilities. Organizations may experience data breaches, content tampering, service disruption, and potential regulatory compliance violations depending on the sensitive nature of the data managed by their Kentico installations. The vulnerability's impact extends beyond immediate system compromise to include potential lateral movement within networks where the compromised server might serve as an entry point for broader attacks.
Mitigation strategies for CVE-2019-10068 should focus on immediate patching of affected versions to the recommended secure releases including Kentico 12.0.15, 11.0.48, 10.0.52, and appropriate updates for 9.x versions. Organizations should implement network segmentation and access controls to limit exposure of staging services to unauthorized users. Security headers validation should be strengthened through configuration changes that enforce proper authentication requirements for staging service endpoints. Additionally, implementing application firewalls and intrusion detection systems can help monitor for suspicious requests targeting the staging service. The vulnerability demonstrates the importance of following secure coding practices including input validation, proper authentication enforcement, and secure deserialization techniques. Organizations should also consider implementing regular security assessments and penetration testing to identify similar vulnerabilities in their web applications. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and remote code execution, highlighting the need for layered security controls that address multiple stages of the attack lifecycle.