Add fuzzer for coverage allowlist parse function (#3580)

microsoft · Oct 18, 2023 · 90be543 · 90be543
1 parent 86a642b
commit 90be543
Show file tree

Hide file tree

Showing 3 changed files with 50 additions and 0 deletions.
diff --git a/src/agent/coverage/fuzz/Cargo.lock b/src/agent/coverage/fuzz/Cargo.lock
diff --git a/src/agent/coverage/fuzz/Cargo.toml b/src/agent/coverage/fuzz/Cargo.toml
@@ -28,3 +28,10 @@ name = "fuzz_target_record_coverage"
 path = "fuzz_targets/fuzz_target_record_coverage.rs"
 test = false
 doc = false
+
+[[bin]]
+name = "fuzz_target_allowlist_parse"
+path = "fuzz_targets/fuzz_target_allowlist_parse.rs"
+test = false
+doc = false
+
diff --git a/src/agent/coverage/fuzz/fuzz_targets/fuzz_target_allowlist_parse.rs b/src/agent/coverage/fuzz/fuzz_targets/fuzz_target_allowlist_parse.rs
@@ -0,0 +1,12 @@
+#![no_main]
+
+use libfuzzer_sys::fuzz_target;
+use coverage::allowlist::AllowList;
+
+fuzz_target!(|data: &[u8]| {
+    // fuzzed code goes here
+    if let Ok(s) = std::str::from_utf8(data) 
+    {
+        let _ = AllowList::parse(s);
+    }
+});