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Added Cap::DATA_EXFIL and taint fp and fn fixes on real repos (#59)
* feat: Enhance data exfiltration detection with source sensitivity gating for cookies and headers * feat: Implement cross-file data exfiltration detection with parameter-specific gate filters * feat: Add calibration tests and refine DATA_EXFIL severity scoring logic * feat: Introduce per-detector configuration for data exfiltration suppression * feat: Enhance DATA_EXFIL findings with destination field tracking in diagnostics and SARIF output * feat: Add tainted body and URL handling for data exfiltration detection * feat: Add integration tests and fixtures for DATA_EXFIL and SSRF detection in Go * feat: Add Java integration tests and fixtures for DATA_EXFIL detection across multiple HTTP clients * feat: Add synthetic externals handling for closure-captured variables in SSA * feat: Implement closure-based suppression for resource leak findings * feat: Add regression guards for shell-injection and taint propagation in for-of destructure patterns * feat: Implement constructor cap narrowing for data exfiltration detection in HTTP request builders * feat: Add gated sinks for data exfiltration detection in C and C++ using curl_easy_setopt * feat: Implement DATA_EXFIL cap parity for backwards analysis and add integration tests * feat: Add data exfiltration sinks for various languages and enhance documentation * refactor: Simplify formatting and improve readability in various files * refactor: Improve readability by simplifying conditional statements and adding clippy linting * docs: Update CHANGELOG and comments for data exfiltration features and configuration * docs: Clarify configuration instructions for data exfiltration trusted destinations * docs: Enhance comments for evidence routing logic in data exfiltration
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Eli Peter
GitHub
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a438886217
commit
58f1794a4e
189 changed files with 8421 additions and 383 deletions
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@ -158,6 +158,39 @@ pub struct SsaFuncSummary {
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/// (caller_param_index, sink_arg_position, sink_caps).
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#[serde(default)]
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pub param_to_sink_param: Vec<(usize, usize, Cap)>,
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/// Per-parameter gate-filter cap masks lifted from inner multi-gate
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/// sink call sites.
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///
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/// When a function body contains a callee whose
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/// [`crate::cfg::CallMeta::gate_filters`] carries more than one entry
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/// (e.g. `fetch` is both an `SSRF` gate on the URL arg and a
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/// `DATA_EXFIL` gate on the body arg), the multi-gate dispatch in
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/// [`super::super::collect_block_events`] cap-narrows the event's
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/// `sink_caps` to the specific gate's `label_caps`. Each
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/// `(param_idx, label_caps)` entry records that this function's
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/// parameter `param_idx` flowed into a gated sink whose narrowed
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/// caps were `label_caps`.
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///
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/// Cross-file callers consume this list to preserve per-position cap
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/// attribution through wrapper functions: a wrapper
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/// `fn forward(url, body) { fetch(url, {body}) }` records
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/// `[(0, SSRF), (1, DATA_EXFIL)]` so a caller of `forward` splits
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/// URL-tainted SSRF findings from body-tainted DATA_EXFIL findings
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/// instead of conflating both caps onto every parameter.
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///
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/// `Vec<(param_idx, label_caps)>` is sufficient at cross-file
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/// granularity, the corresponding `payload_args` and
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/// `destination_uses` are intra-file context that does not survive
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/// the function-summary boundary (field idents reference SSA
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/// values from the callee body).
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///
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/// Empty (the default) for callees whose internal sinks carry zero
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/// or one gate filter, the existing
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/// [`Self::param_to_sink`] /
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/// [`Self::param_to_sink_param`] machinery already records those
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/// cases without per-position cap conflict.
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#[serde(default, skip_serializing_if = "Vec::is_empty")]
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pub param_to_gate_filters: Vec<(usize, Cap)>,
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/// Parameter indices whose container identity flows to the return value
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/// (e.g., function returns the same container it received as input).
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///
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@ -441,6 +441,7 @@ fn ssa_summary_serde_round_trip_identity() {
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field_points_to: Default::default(),
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return_path_facts: smallvec::SmallVec::new(),
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typed_call_receivers: vec![],
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param_to_gate_filters: vec![],
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};
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let json = serde_json::to_string(&summary).unwrap();
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let back: SsaFuncSummary = serde_json::from_str(&json).unwrap();
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@ -473,6 +474,7 @@ fn ssa_summary_serde_round_trip_strip_bits() {
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field_points_to: Default::default(),
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return_path_facts: smallvec::SmallVec::new(),
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typed_call_receivers: vec![],
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param_to_gate_filters: vec![],
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};
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let json = serde_json::to_string(&summary).unwrap();
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let back: SsaFuncSummary = serde_json::from_str(&json).unwrap();
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@ -502,6 +504,7 @@ fn ssa_summary_serde_round_trip_add_bits() {
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field_points_to: Default::default(),
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return_path_facts: smallvec::SmallVec::new(),
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typed_call_receivers: vec![],
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param_to_gate_filters: vec![],
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};
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let json = serde_json::to_string(&summary).unwrap();
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let back: SsaFuncSummary = serde_json::from_str(&json).unwrap();
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@ -538,6 +541,7 @@ fn ssa_summary_serde_round_trip_all_variants() {
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field_points_to: Default::default(),
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return_path_facts: smallvec::SmallVec::new(),
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typed_call_receivers: vec![],
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param_to_gate_filters: vec![],
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};
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let json = serde_json::to_string(&summary).unwrap();
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let back: SsaFuncSummary = serde_json::from_str(&json).unwrap();
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@ -576,6 +580,7 @@ fn global_summaries_insert_ssa_exact_key_replacement() {
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field_points_to: Default::default(),
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return_path_facts: smallvec::SmallVec::new(),
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typed_call_receivers: vec![],
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param_to_gate_filters: vec![],
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};
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gs.insert_ssa(key.clone(), v1.clone());
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assert_eq!(gs.get_ssa(&key), Some(&v1));
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@ -602,6 +607,7 @@ fn global_summaries_insert_ssa_exact_key_replacement() {
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field_points_to: Default::default(),
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return_path_facts: smallvec::SmallVec::new(),
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typed_call_receivers: vec![],
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param_to_gate_filters: vec![],
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};
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gs.insert_ssa(key.clone(), v2.clone());
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assert_eq!(gs.get_ssa(&key), Some(&v2));
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@ -648,6 +654,7 @@ fn global_summaries_merge_with_ssa_entries() {
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field_points_to: Default::default(),
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return_path_facts: smallvec::SmallVec::new(),
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typed_call_receivers: vec![],
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param_to_gate_filters: vec![],
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};
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let sum_b = SsaFuncSummary {
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param_to_return: vec![],
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@ -670,6 +677,7 @@ fn global_summaries_merge_with_ssa_entries() {
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field_points_to: Default::default(),
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return_path_facts: smallvec::SmallVec::new(),
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typed_call_receivers: vec![],
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param_to_gate_filters: vec![],
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};
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gs1.insert_ssa(key_a.clone(), sum_a.clone());
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@ -716,6 +724,7 @@ fn global_summaries_is_empty_considers_ssa() {
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field_points_to: Default::default(),
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return_path_facts: smallvec::SmallVec::new(),
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typed_call_receivers: vec![],
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param_to_gate_filters: vec![],
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},
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);
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@ -745,6 +754,7 @@ fn ssa_summary_serde_round_trip_param_to_sink_param() {
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field_points_to: Default::default(),
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return_path_facts: smallvec::SmallVec::new(),
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typed_call_receivers: vec![],
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param_to_gate_filters: vec![],
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};
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let json = serde_json::to_string(&summary).unwrap();
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let back: SsaFuncSummary = serde_json::from_str(&json).unwrap();
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@ -789,6 +799,7 @@ fn ssa_summary_serde_round_trip_container_fields() {
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field_points_to: Default::default(),
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return_path_facts: smallvec::SmallVec::new(),
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typed_call_receivers: vec![],
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param_to_gate_filters: vec![],
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};
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let json = serde_json::to_string(&summary).unwrap();
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let back: SsaFuncSummary = serde_json::from_str(&json).unwrap();
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@ -843,6 +854,7 @@ fn ssa_summary_serde_round_trip_return_abstract() {
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field_points_to: Default::default(),
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return_path_facts: smallvec::SmallVec::new(),
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typed_call_receivers: vec![],
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param_to_gate_filters: vec![],
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};
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let json = serde_json::to_string(&summary).unwrap();
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let back: SsaFuncSummary = serde_json::from_str(&json).unwrap();
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@ -916,6 +928,8 @@ fn make_callee_body(
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exception_edges: vec![],
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field_interner: crate::ssa::ir::FieldInterner::default(),
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field_writes: std::collections::HashMap::new(),
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synthetic_externals: std::collections::HashSet::new(),
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},
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opt: crate::ssa::OptimizeResult {
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const_values: std::collections::HashMap::new(),
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@ -1361,6 +1375,7 @@ fn global_summaries_resolve_body_requires_body_present() {
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field_points_to: Default::default(),
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return_path_facts: smallvec::SmallVec::new(),
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typed_call_receivers: vec![],
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param_to_gate_filters: vec![],
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},
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);
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// Don't insert body
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@ -3504,6 +3519,7 @@ fn cf4_return_path_transform_serde_round_trip() {
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field_points_to: Default::default(),
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return_path_facts: smallvec::SmallVec::new(),
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typed_call_receivers: vec![],
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param_to_gate_filters: vec![],
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};
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let json = serde_json::to_string(&summary).unwrap();
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let back: SsaFuncSummary = serde_json::from_str(&json).unwrap();
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