Summary
A SQL injection vulnerability in SourceCodester Tailor Management System 1.0 allows attackers to manipulate database queries via the addmeasurement.php endpoint.
When user-supplied data in the id parameter is concatenated directly into SQL statements, an attacker can interfere with query logic and potentially access or modify sensitive data.
Affected context
This vulnerability occurs in the web interface of the Tailor Management System, specifically in requests to addmeasurement.php that use the id parameter to drive database lookups.
It is most relevant where the application uses dynamic SQL constructed from request parameters without proper binding or validation.
Deployments that expose this endpoint to untrusted users, such as public or customer-facing installations, are at higher risk of exploitation.
Exploit preconditions
- Attack surface: HTTP requests to
addmeasurement.phpwith theidparameter. - Required access: Ability to send crafted requests to the Tailor Management System (typically as an unauthenticated or low-privileged user, depending on deployment).
- Trigger point: Execution of database queries that incorporate the
idparameter as part of a SQL statement. - Why exploitation is possible: User-controlled input is concatenated directly into SQL without parameterization or robust validation, enabling alteration of query structure.
Why this happens
The core issue is the construction of SQL statements by directly embedding request parameters into query strings.
This pattern aligns with CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'), where special characters and control tokens supplied by the user are not neutralized.
Instead of using prepared statements or safe query builders, the implementation relies on string concatenation, allowing attackers to modify the intended SQL logic.
Potential impact
- Attackers may read sensitive information from measurement or customer-related tables.
- Attackers could modify or delete measurement records and other business data.
- SQL injection can be used to create new accounts or elevate privileges within the application.
- In some environments, the database server itself may be compromised if extended capabilities (e.g., file access or stored procedures) are available.
General mitigation guidance
Effective mitigation focuses on eliminating dynamic query construction and reducing trust in request parameters.
Pattern-based defenses include:
- Using prepared statements with bound parameters or a trusted ORM that abstracts query building.
- Applying strict input validation and type enforcement on identifiers such as
id, treating them as numeric or constrained tokens. - Segregating database privileges so application accounts have only the minimum permissions needed for routine operations.
- Centralizing database access patterns to make it easier to enforce safe querying practices and avoid ad-hoc SQL string concatenation.
How teams detect issues like this
Detection often involves a combination of code and runtime analysis:
- Static analysis rules that flag direct concatenation of request parameters into SQL strings or dynamic query builders.
- Code review checklists that highlight endpoints taking identifiers or filters and ensure they use parameterized queries.
- Runtime monitoring and logging to detect anomalous query patterns, such as unexpected operators or comment markers in executed SQL.
- Integration of automated security testing tools that send injection payloads to high-risk endpoints as part of continuous integration pipelines.
