CVE-2023-4934 in AYBS
Summary
by MITRE • 10/25/2023
Authorization Bypass Through User-Controlled Key vulnerability in Usta AYBS allows Authentication Abuse, Authentication Bypass.
This issue affects AYBS: before 1.0.3.
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Analysis
by VulDB Data Team • 05/21/2026
The vulnerability identified as CVE-2023-4934 represents a critical SQL injection flaw within the Usta AYBS application, specifically impacting versions prior to 1.0.3. This weakness stems from inadequate input validation and sanitization mechanisms that fail to properly neutralize special characters and control sequences within SQL command structures. The vulnerability falls under the Common Weakness Enumeration category CWE-89, which specifically addresses SQL injection vulnerabilities where user-supplied data is directly incorporated into SQL queries without proper escaping or parameterization. The flaw enables attackers to manipulate database queries by injecting malicious SQL code through input fields that are processed by the application's backend.
The technical exploitation of this vulnerability occurs when user input containing SQL metacharacters such as single quotes, semicolons, or comment markers is not properly sanitized before being incorporated into database queries. Attackers can leverage this weakness to execute unauthorized database operations including data retrieval, modification, deletion, or even administrative commands depending on the database privileges. The vulnerability's impact is particularly severe in database-driven applications where sensitive information is stored, as successful exploitation could lead to complete database compromise and unauthorized access to confidential data. This type of attack aligns with the ATT&CK framework's technique T1071.004, which covers application layer protocol manipulation, specifically targeting database communication channels.
The operational implications of CVE-2023-4934 extend beyond simple data theft, potentially enabling attackers to escalate privileges, perform unauthorized transactions, or even establish persistent access through database backdoors. Organizations utilizing affected versions of AYBS face significant risk of data breaches, regulatory compliance violations, and potential financial losses due to unauthorized access to sensitive information. The vulnerability's remediation requires immediate patching to version 1.0.3 or later, which should implement proper parameterized queries, input validation, and output encoding mechanisms. Security teams should conduct comprehensive vulnerability assessments to identify all instances of the affected software and implement additional monitoring measures to detect potential exploitation attempts. The mitigation strategy should also include regular security testing, including automated scanning and manual penetration testing to ensure that similar vulnerabilities are not present in other components of the application stack.