Insecure exceptions - NullPointerException
Description
Use is made of functions that perform catch to Nullpointer exceptions, which can cause unexpected behavior in the system.
Impact
- Decrease application performance.
- Cause a possible denial of service.
Recommendation
The catch to NullpointerException should only be used when test class entries need to be tested.
Threat
Unauthorized attacker from the Internet.
Expected Remediation Time
⌚ 15 minutes.
Score
Default score using CVSS 3.1. It may change depending on the context of the vulnerability.
Base
- Attack vector: N
- Attack complexity: H
- Privileges required: N
- User interaction: N
- Scope: U
- Confidentiality: N
- Integrity: N
- Availability: L
Temporal
- Exploit code madurity: U
- Remediation level: X
- Report confidence: X
Result
- Vector string: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:X/RC:X
- Score:
- Base: 3.7
- Temporal: 3.4
- Severity:
- Base: Low
- Temporal: Low
Code Examples
Compliant code
All exceptions in the code are correctly handled and accounted for
public class SimpleTesting{
static String str;
public static void main(String[] args) {
try {
//Code that should generate an exception with an speficied message
}catch(Exception e) {
//Handle specified exception
}
}
}
Non compliant code
The application includes code that could potentially generate a null pointer exception
public class SimpleTesting{
static String str;
public static void main(String[] args) {
try {
//Code that could generate a nullPointerException
}catch(NullPointerException e) {
System.out.println("Null Pointer: "+e.getMessage());
}
}
}
Requirements
- 161. Define secure default options
- 266. Disable insecure functionalities
- 359. Avoid using generic exceptions
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