1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
//! Apache Cassandra / CQL injection grammar-aware mutation.
/// Detect Cassandra CQL injection signals.
#[must_use]
pub fn detect_type(payload: &str) -> bool {
let lower = payload.to_ascii_lowercase();
lower.contains("cassandra")
|| lower.contains("consistency ")
|| lower.contains("token(")
|| lower.contains("allow filtering")
|| lower.contains("using ttl")
|| (lower.contains("select") && lower.contains("from") && lower.contains("json"))
}
/// Generate Cassandra mutation variants.
#[must_use]
pub fn mutate(payload: &str) -> Vec<String> {
if !detect_type(payload) {
return Vec::new();
}
let mut results = Vec::new();
let lower = payload.to_ascii_lowercase();
// JSON output format bypass
if lower.contains("select") {
results.push(format!("{payload} JSON"));
results.push(payload.replace("SELECT ", "SELECT JSON "));
}
// Consistency level manipulation
results.push(format!("CONSISTENCY ALL; {payload}"));
results.push(format!("CONSISTENCY ONE; {payload}"));
// Token-based partition key bypass
if lower.contains("where") {
results.push(payload.replace("WHERE ", "WHERE token(") + ") > 0");
}
// Time-to-live / timestamp injection
if lower.contains("insert") || lower.contains("update") {
results.push(format!("{payload} USING TTL 86400"));
}
results
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn detects_cassandra_signals() {
assert!(detect_type("SELECT JSON * FROM users"));
assert!(detect_type("CONSISTENCY ONE"));
assert!(detect_type("SELECT * FROM users USING TTL 86400"));
}
#[test]
fn generates_json_variants() {
let mutations = mutate("SELECT JSON * FROM users");
assert!(mutations.iter().any(|m| m.contains("JSON")));
}
#[test]
fn rejects_non_cassandra() {
assert!(!detect_type("hello world"));
assert!(mutate("' OR 1=1--").is_empty());
}
#[test]
fn consistency_variants_generated() {
let mutations = mutate("SELECT * FROM users USING TTL");
assert!(mutations.iter().any(|m| m.contains("CONSISTENCY")));
}
#[test]
fn ttl_variant_for_insert() {
let mutations = mutate("INSERT INTO users (id) VALUES (1) USING TTL");
assert!(mutations.iter().any(|m| m.contains("USING TTL")));
}
#[test]
fn token_variant_for_where() {
let mutations = mutate("SELECT JSON * FROM users WHERE id = 1");
assert!(mutations.iter().any(|m| m.contains("token(")));
}
#[test]
fn empty_payload_returns_empty() {
assert!(mutate("").is_empty());
}
}