Avoid unsafe temporary file creation

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Metadata

ID: csharp-security/unsafe-temp-file

Language: C#

Severity: Notice

Category: Security

CWE: 377

Description

The function GetTempFileName is known to have security issues and may lead to attacks. Temporary files should not be predictable and safe to use. Avoid the function GetTempFileName.

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Non-Compliant Code Examples

class MyClass {
    public static void payloadDecode()
    {
        var temporaryPath = Path.GetTempFileName();
    }
}

Compliant Code Examples

using System.Xml;

class MyClass {
    public static void payloadDecode()
    {
        var temporaryPath = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName());
    }
}
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