etc/L3X_SAST_Report_Rust.html

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    <header>
        <h1>L3X - Static Application Security Testing (SAST) Report</h1>
        <p>Technology: Rust</p>
        <p>Check more on: <a href='https://vulnplanet.com/'>VulnPlanet</a><br>Contribute: <a href='https://github.com/VulnPlanet/l3x'>GitHub</a></p>
    </header>
    <section>
    <h2>Summary</h2>
    <div class='chart-container'>
        <h3>By Severity</h3>
        <canvas id='severityChart'></canvas>
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    <div class='chart-container'>
        <h3>False Positive Rate</h3>
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</section>      
    <section>
        <h2>Vulnerabilities</h2>
        <p>🟢 GPT 3.5 - Valid or Not possible to determine</p>
        <p>🔴 GPT 3.5 - False Positive</p>
        <table>
            <tr>
                <th>ID</th>
                <th>Title</th>
                <th>Status</th>
                <th>Severity</th>
                <th>File</th>
                <th>Description</th>
                <th>Details</th>
            </tr>
            <tr>
                <td>RUST012</td>
                <td>[Rust-General] Integer Overflow</td>
                <td>🟢 GPT 3.5</td>
                <td>High</td>
                <td>testcode/test.rs</td>
                <td>Arithmetic operations that may overflow, leading to incorrect calculations or vulnerabilities.</td>
                <td>This is a valid vulnerability. The flagged code `c = a + b;` performs an addition operation without checking for integer overflow. In Rust, integer overflow is handled differently in debug and release modes. In debug mode, an overflow will cause a panic, whereas in release mode, the result will wrap around. 

To fix this vulnerability, you can use the checked arithmetic operations provided by Rust. The checked addition operation returns an `Option` that contains the sum if no overflow occurs, or `None` if an overflow occurs. You can use pattern matching to handle the result of the addition operation. Here's an example fix:

```rust
fn arithmetic_overflow_examples() {
    let a: u8 = 255;
    let b: u8 = 1;
    let c = a.checked_add(b);
    
    match c {
        Some(result) => println!("No overflow: {}", result),
        None => println!("Overflow occurred"),
    }
    
    let large_num = std::u32::MAX;
    let another_large_num = 1;
    let result = large_num.checked_mul(another_large_num);
    
    match result {
        Some(result) => println!("No overflow: {}", result),
        None => println!("Overflow occurred"),
    }
}
```

By using the checked addition and checked multiplication operations, you can detect overflow and handle it accordingly.</td>
            </tr><tr>
                <td>RUST020</td>
                <td>[Rust-General] Unsafe Dereferencing</td>
                <td>🟢 GPT 3.5</td>
                <td>High</td>
                <td>testcode/test.rs</td>
                <td>Dereferencing pointers without ensuring they point to valid memory, leading to potential segmentation faults or undefined behavior.</td>
                <td>This is a valid vulnerability detected by the SAST tool. The vulnerability is titled '[Rust-General] Unsafe Dereferencing' and has a severity level of 'High'. 

The line of code flagged is:

```rust
println!("Dereferencing a raw pointer: {}", *y);
```

This vulnerability occurs because `y` is a dangling pointer, which means it refers to memory that has been deallocated. Dereferencing such a pointer can lead to undefined behavior, potentially causing crashes or security vulnerabilities. 

To fix this vulnerability, you can avoid dereferencing the dangling pointer. You should make sure that the pointer is pointing to a valid memory location before dereferencing it. One way to ensure this is by using `std::ptr::null` or `std::ptr::null_mut` to represent a null pointer in situations where the value may become deallocated. Then, before dereferencing the pointer, you can check if it is null using an `if` statement to avoid undefined behavior.

Here's an example of how you can modify the code to avoid the vulnerability:

```rust
// RUST020 - Unsafe Dereferencing
if !y.is_null() {
    println!("Dereferencing a raw pointer: {}", *y);
}
```

By performing the null check, you prevent the program from attempting to dereference a dangling pointer and avoid the potential vulnerability.</td>
            </tr><tr>
                <td>RUST006</td>
                <td>[Rust-General] Memory Leaks</td>
                <td>🟢 GPT 3.5</td>
                <td>Medium</td>
                <td>testcode/test.rs</td>
                <td>Improper use of memory allocation that could result in memory leaks.</td>
                <td>This is a valid vulnerability. The potential Rust vulnerability titled '[Rust-General] Memory Leaks' flagged by the SAST tool is valid because it identifies a memory leak issue. 

The flagged line of code is:
```
Box::new(
```
The potential memory leak occurs when a Box is created but not assigned to any variable. This results in a memory allocation that is never freed. To fix this issue, you should assign the Box to a variable or drop it immediately if it is not needed.

Here's an updated version of the code with the fix:
```rust
use std::mem;
use std::ptr;

fn main() {
    unsafe_code_examples();
    arithmetic_overflow_examples();
}

unsafe fn unsafe_code_examples() {
    // RUST011 - Use After Free
    let x = Box::new(42);
    let y = Box::into_raw(x); // Allocation is freed here, y is now a dangling pointer
    drop(Box::from_raw(y)); // Use after free
    
    // RUST020 - Unsafe Dereferencing
    println!("Dereferencing a raw pointer: {}", *y);

    // RUST003 - Dangling Pointers
    let z: *const i32;
    {
        let temp_var = 33;
        z = &temp_var as *const i32; // z becomes a dangling pointer here
    }
    println!("Dangling pointer access: {:?}", z);

    // Directly manipulating memory without proper checks can lead to undefined behavior
    let mut array = [1, 2, 3, 4, 5];
    let array_ptr: *mut i32 = array.as_mut_ptr();
    ptr::write(array_ptr.offset(5), 999); // RUST004 - Buffer Overflows
}

fn arithmetic_overflow_examples() {
    // RUST012 - Integer Overflow
    let a: u8 = 255;
    let b: u8 = 1;
    let c = a + b; // This will overflow in debug mode, or wrap in release mode
    println!("Overflow example: {}", c);

    // Demonstrating unchecked arithmetic operations
    let large_num = std::u32::MAX;
    let another_large_num = 1;
    let result = large_num * another_large_num; // Potential for RUST012 - Integer Overflow
    println!("Unchecked multiplication might overflow: {}", result);
}
```

In this fix, the Box is assigned to the variable `x` to ensure ownership and proper memory management.</td>
            </tr>
        </table>
    </section>
    <section>
        <h2>Safe Patterns Overview</h2>
        <table>
            <tr>
                <th>Pattern ID</th>
                <th>Title</th>
                <th>Safe Pattern</th>
            </tr>
            
        </table>
    </section>
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