CRITICAL
Rule Definition
Opening temporary files without appropriate measures or controls can leave the file, its contents and any function that it impacts vulnerable to attack.
Remediation
Use an API that creates temporary files with restricted access such as java.nio.file.Files.createTempFile().
Violation Code Sample
import java.io.File;
// ...
File temp = File.createTempFile("pattern", ".suffix"); // VIOLATION
Fixed Code Sample
import java.nio.file.Files;
// ...
Path temp = Files.createTempFile("pattern", ".suffix"); // FIXED
Reference
CWE-378: Creation of Temporary File With Insecure Permissions
https://cwe.mitre.org/data/definitions/378.html
CWE-379: Creation of Temporary File in Directory with Insecure Permissions
https://cwe.mitre.org/data/definitions/379.html
Related Technologies
Technical Criterion
Secure Coding - Weak Security Features
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