Summary
A SQL injection vulnerability in the Online-Appointment-Booking-System login handler allows remote attackers to manipulate username or password input used by a database query. Under conditions where these values reach the query without effective parameterization, an attacker may bypass authentication or access, alter, or disrupt database-backed information.
A SQL injection vulnerability in the Online-Appointment-Booking-System login handler allows remote attackers to manipulate username or password input used by a database query. Under conditions where these values reach the query without effective parameterization, an attacker may bypass authentication or access, alter, or disrupt database-backed information.
Affected context
The vulnerability occurs in the login handler at Admin/mlogin.php, where the uname and pass request parameters are used in a database query through mysqli_query. It may affect deployments using the referenced code lineage when these inputs are remotely reachable and are not consistently handled through parameterized queries or equivalent query-separation controls.
The vulnerability occurs in the login handler at Admin/mlogin.php, where the uname and pass request parameters are used in a database query through mysqli_query. It may affect deployments using the referenced code lineage when these inputs are remotely reachable and are not consistently handled through parameterized queries or equivalent query-separation controls.
Exploit preconditions
- Attack surface: Remotely accessible login endpoint
- Required access: Ability to submit requests to the login handler; no prior authenticated access may be necessary
- Trigger point: Processing of the
unameorpassparameters - Why exploitation is possible: User-controlled values may be incorporated into a SQL statement without reliable separation between data and query syntax
- Attack surface: Remotely accessible login endpoint
- Required access: Ability to submit requests to the login handler; no prior authenticated access may be necessary
- Trigger point: Processing of the
unameorpassparameters - Why exploitation is possible: User-controlled values may be incorporated into a SQL statement without reliable separation between data and query syntax
Why this happens
The underlying issue is the construction or execution of a database query using externally controlled input without a sufficiently safe query interface. This behavior maps primarily to CWE-89: Improper Neutralization of Special Elements used in an SQL Command (SQL Injection). CWE-74 is a broader parent category covering improper neutralization of special elements in output used by another component; in this case, the affected interpreter is the SQL engine.
The underlying issue is the construction or execution of a database query using externally controlled input without a sufficiently safe query interface. This behavior maps primarily to CWE-89: Improper Neutralization of Special Elements used in an SQL Command (SQL Injection). CWE-74 is a broader parent category covering improper neutralization of special elements in output used by another component; in this case, the affected interpreter is the SQL engine.
Potential impact
- An attacker may bypass login controls
- Sensitive database records could be read
- Application data could be modified or deleted
- Database availability could be disrupted
- Information disclosed through query responses could support further attacks
- An attacker may bypass login controls
- Sensitive database records could be read
- Application data could be modified or deleted
- Database availability could be disrupted
- Information disclosed through query responses could support further attacks
General mitigation guidance
Mitigation generally focuses on ensuring that user-supplied values cannot alter SQL statement structure.
Common defensive patterns include:
- Using parameterized queries or prepared statements for every database operation
- Avoiding dynamic SQL construction from request parameters
- Applying allowlist validation for fields with constrained formats
- Limiting the database account to the minimum required privileges
- Separating authentication logic from ad hoc query construction
- Returning generic login errors and minimizing database details in responses
These controls reduce both direct injection risk and the potential impact of a compromised database account.
Mitigation generally focuses on ensuring that user-supplied values cannot alter SQL statement structure.
Common defensive patterns include:
- Using parameterized queries or prepared statements for every database operation
- Avoiding dynamic SQL construction from request parameters
- Applying allowlist validation for fields with constrained formats
- Limiting the database account to the minimum required privileges
- Separating authentication logic from ad hoc query construction
- Returning generic login errors and minimizing database details in responses
These controls reduce both direct injection risk and the potential impact of a compromised database account.
How teams detect issues like this
Detection approaches can include:
- Static analysis for string concatenation or interpolation of request parameters into SQL calls
- Code review checks around
mysqli_queryand other database APIs - Dynamic application testing using benign injection probes in controlled environments
- Web-application firewall or gateway policies for suspicious SQL metacharacter patterns
- Database monitoring for anomalous authentication queries, error spikes, and unexpected read or write activity
- Automated security review tools that flag unparameterized database access paths
Detection approaches can include:
- Static analysis for string concatenation or interpolation of request parameters into SQL calls
- Code review checks around
mysqli_queryand other database APIs - Dynamic application testing using benign injection probes in controlled environments
- Web-application firewall or gateway policies for suspicious SQL metacharacter patterns
- Database monitoring for anomalous authentication queries, error spikes, and unexpected read or write activity
- Automated security review tools that flag unparameterized database access paths
Sources
| Source | Link |
|---|---|
| github. | github.com/ |
| github. | github.com/ |
| vuldb. | vuldb.com/ |
| vuldb. | vuldb.com/ |
| vuldb. | vuldb.com/ |
| vuldb. | vuldb.com/ |
