CVE-2024-49400 in Tacquito
Summary
by MITRE • 10/17/2024
Tacquito prior to commit 07b49d1358e6ec0b5aa482fcd284f509191119e2 was not properly performing regex matches on authorized commands and arguments. Configured allowed commands/arguments were intended to require a match on the entire string, but instead only enforced a match on a sub-string. That would have potentially allowed unauthorized commands to be executed.
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Analysis
by VulDB Data Team • 11/02/2024
The vulnerability identified as CVE-2024-49400 affects Tacquito, a system designed to manage and control authorized command execution through configured access controls. This flaw represents a critical weakness in the authorization mechanism that governs which commands and arguments users may execute within the system. The vulnerability stems from improper implementation of regular expression matching logic that should have enforced strict string matching but instead permitted partial substring matching. This misconfiguration creates a significant security gap where unauthorized commands could potentially bypass the intended access controls. The flaw exists in Tacquito versions prior to commit 07b49d1358e6ec0b5aa482fcd284f509191119e2, indicating that the developers were aware of the issue and have since implemented a fix. The root cause of this vulnerability aligns with CWE-284, which describes improper access control mechanisms where systems fail to properly enforce authorization checks. This weakness specifically manifests as an inadequate input validation process that should have required exact matches for all configured allowed commands and arguments but instead accepted partial matches, thereby weakening the security boundary. The operational impact of this vulnerability extends beyond simple command execution, as it potentially allows attackers to escalate privileges or execute unauthorized operations within the system's controlled environment. The flaw creates a path for privilege escalation attacks where malicious actors could exploit the substring matching behavior to bypass access controls and execute commands that should have been restricted. This vulnerability directly relates to ATT&CK technique T1068, which covers "Exploitation for Privilege Escalation" and T1059, covering "Command and Scripting Interpreter," as it enables unauthorized command execution through manipulated input validation. The security implications are particularly concerning given that Tacquito systems likely operate in environments where strict command control is essential for maintaining system integrity and preventing unauthorized access to critical resources. Organizations using affected versions of Tacquito must urgently implement the fix provided in commit 07b49d1358e6ec0b5aa482fcd284f509191119e2, which corrects the regular expression matching behavior to enforce full string matching rather than partial substring matching. The remediation process should include thorough testing of all configured allowed commands and arguments to ensure that the updated matching logic properly enforces authorization boundaries. Additionally, system administrators should conduct comprehensive audits of all command execution configurations to identify any potential unauthorized access paths that may have existed prior to the fix implementation. The vulnerability highlights the critical importance of proper input validation and access control implementation in security-critical systems, as even seemingly minor flaws in regular expression handling can create significant security risks. This flaw demonstrates how improper implementation of security controls can undermine the entire security architecture, making it essential for developers to follow established security best practices and conduct thorough testing of authorization mechanisms before deployment. Organizations should also consider implementing additional monitoring and logging for command execution activities to detect potential exploitation attempts and ensure that access control mechanisms are functioning as intended. The vulnerability serves as a reminder that security controls must be rigorously validated and tested, particularly those that govern access to critical system functions and command execution capabilities.