security_rust/file/
path_traversal.rs

1// Copyright (c) 2026 erik <erik@erik.xyz> — https://erik.xyz
2
3use regex::Regex;
4use std::sync::LazyLock;
5
6use crate::{AttackCategory, DetectionResult, Detector, Severity};
7
8static PATTERNS: LazyLock<Vec<Regex>> = LazyLock::new(|| {
9    vec![
10        Regex::new(r"\.\./").unwrap(),
11        Regex::new(r"\.\.\\").unwrap(),
12        Regex::new(r"(?i)\.\.%2[Ff]").unwrap(),
13        Regex::new(r"(?i)%2[Ee]%2[Ee]").unwrap(),
14        Regex::new(r"(?i)php://filter").unwrap(),
15        Regex::new(r"(?i)php://input").unwrap(),
16        Regex::new(r"(?i)data://").unwrap(),
17        Regex::new(r"(?i)expect://").unwrap(),
18        Regex::new(r"(?i)phar://").unwrap(),
19        Regex::new(r"(?i)zip://").unwrap(),
20        Regex::new(r"(?i)glob://").unwrap(),
21        Regex::new(r"%00").unwrap(),
22        Regex::new(r"\x00").unwrap(),
23    ]
24});
25
26pub struct PathTraversalDetector;
27
28impl Detector for PathTraversalDetector {
29    fn name(&self) -> &'static str {
30        "path_traversal"
31    }
32
33    fn detect(&self, input: &str) -> Option<DetectionResult> {
34        for re in PATTERNS.iter() {
35            if let Some(m) = re.find(input) {
36                return Some(DetectionResult {
37                    attack_type: "path_traversal".into(),
38                    category: AttackCategory::File,
39                    severity: Severity::Critical,
40                    matched_pattern: m.as_str().to_string(),
41                    offset: m.start(),
42                    message: "Path traversal attack detected".into(),
43                });
44            }
45        }
46        None
47    }
48}
security_rust/file/path_traversal.rs

security_rust/file/
path_traversal.rs
