CVE-2023-0882 in Single Connect
Summary
by MITRE • 02/17/2023
Improper Input Validation, Authorization Bypass Through User-Controlled Key vulnerability in Kron Tech Single Connect on Windows allows Privilege Abuse. This issue affects Single Connect: 2.16.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 06/01/2026
The vulnerability identified as CVE-2023-0882 represents a critical security flaw in Kron Tech Single Connect version 2.16 running on Windows systems. This vulnerability stems from improper input validation mechanisms that fail to adequately verify user-supplied data before processing. The flaw manifests as an authorization bypass through user-controlled key manipulation, allowing malicious actors to escalate their privileges within the system. The vulnerability specifically targets the authentication and authorization mechanisms of the Single Connect platform, creating a pathway for unauthorized access to protected resources and system functions. Security researchers have classified this as a privilege abuse vulnerability due to its ability to grant elevated permissions to unauthenticated or unauthorized users.
The technical implementation of this vulnerability involves the system's failure to properly validate input parameters that are intended to control access keys or authentication tokens. When users provide input through the application interface or API endpoints, the system does not sufficiently sanitize or validate these inputs before using them in authorization decisions. This weakness creates a condition where crafted user input can manipulate the authorization logic, effectively bypassing normal access controls. The vulnerability typically occurs when the application accepts user-controlled data as part of key generation, token validation, or access control parameters without adequate validation checks. This improper input handling creates a direct path for privilege escalation attacks where an attacker can manipulate the system's authorization decisions through carefully crafted inputs.
The operational impact of CVE-2023-0882 extends beyond simple unauthorized access to encompass potential system compromise and data breaches. An attacker exploiting this vulnerability can gain elevated privileges within the Single Connect environment, potentially accessing sensitive configuration data, user credentials, or system resources that should be restricted. The authorization bypass allows for privilege abuse scenarios where attackers can perform administrative functions, modify system settings, or access confidential information without proper authentication. This vulnerability particularly affects organizations relying on Kron Tech Single Connect for identity management and single sign-on functionality, as it undermines the core security assumptions of the platform. The impact is amplified in environments where Single Connect serves as a central authentication point for multiple systems or services, potentially enabling lateral movement attacks within the network infrastructure.
Mitigation strategies for CVE-2023-0882 should prioritize immediate patching of the affected Kron Tech Single Connect version 2.16 to address the input validation and authorization bypass vulnerabilities. Organizations should implement comprehensive input sanitization measures that validate all user-supplied data before processing, ensuring that authentication keys and access control parameters meet strict validation criteria. Network segmentation and access controls should be reviewed to limit the potential impact of successful exploitation attempts. Security teams should implement monitoring solutions to detect unusual authentication patterns or authorization attempts that may indicate exploitation of this vulnerability. The fix should include robust validation of user-controlled inputs through parameterized queries, input filtering, and proper authorization logic implementation. Additionally, organizations should conduct thorough security assessments of their Single Connect deployments to identify any other potential vulnerabilities in the authentication and authorization mechanisms. This vulnerability aligns with CWE-20 Improper Input Validation and CWE-285 Improper Authorization, and may be leveraged by threat actors following ATT&CK techniques related to privilege escalation and credential access. Regular security updates and vulnerability management processes should be enhanced to prevent similar issues in future deployments.