(IHttpRequestResponse basePair, IScannerInsertionPoint insertionPoint)
| 52 | } |
| 53 | |
| 54 | @Override |
| 55 | public List<IScanIssue> doActiveScan(IHttpRequestResponse basePair, IScannerInsertionPoint insertionPoint) { |
| 56 | Set<String> payloads = new HashSet<>(); |
| 57 | List<String> languages = _getLangs(basePair); |
| 58 | |
| 59 | for (String lang : languages) { |
| 60 | List<String> newPayloads = _payloads.get(lang); |
| 61 | if (newPayloads != null) { |
| 62 | payloads.addAll(newPayloads); |
| 63 | } |
| 64 | } |
| 65 | payloads.addAll(_payloads.get("any")); |
| 66 | |
| 67 | int delayTarget = 0; |
| 68 | int margin = 1000; |
| 69 | for (String payload : payloads) { |
| 70 | if (delayTarget == 0) { |
| 71 | long baseTime = _attack(basePair, insertionPoint, payload, 0).getKey(); |
| 72 | if (baseTime < 1000) { |
| 73 | delayTarget = 4000; |
| 74 | margin = 1000; |
| 75 | } else if (baseTime < 9000) { |
| 76 | delayTarget = 9000; |
| 77 | margin = 3000; |
| 78 | } else { |
| 79 | return Collections.emptyList(); |
| 80 | } |
| 81 | } |
| 82 | if (_attack(basePair, insertionPoint, payload, delayTarget).getKey() > delayTarget) { |
| 83 | Utilities.log("Suspicious delay detected. Confirming it's consistent..."); |
| 84 | Pair<Long, IHttpRequestResponse> dummyAttack = _attack(basePair, insertionPoint, payload, 0); |
| 85 | long dummyTime = dummyAttack.getKey(); |
| 86 | IHttpRequestResponse dummyRequest = dummyAttack.getValue(); |
| 87 | |
| 88 | if (dummyRequest.getResponse() == null) { |
| 89 | Utilities.log("Received empty response to baseline request - abandoning attack"); |
| 90 | break; |
| 91 | } |
| 92 | |
| 93 | if (dummyTime + margin < delayTarget) { |
| 94 | Pair<Long, IHttpRequestResponse> attack = _attack(basePair, insertionPoint, payload, delayTarget); |
| 95 | long timer = attack.getKey(); |
| 96 | if (timer > delayTarget) { |
| 97 | Utilities.log("Code execution confirmed"); |
| 98 | URL url = helpers.analyzeRequest(attack.getValue()).getUrl(); |
| 99 | if (_done.contains(url)) { |
| 100 | Utilities.log("Skipping report - vulnerability already reported"); |
| 101 | break; |
| 102 | } |
| 103 | _done.add(url); |
| 104 | return Arrays.asList(new CustomScanIssue( |
| 105 | attack.getValue().getHttpService(), |
| 106 | url, |
| 107 | new IHttpRequestResponse[] {dummyRequest, attack.getValue()}, |
| 108 | "Code injection", |
| 109 | "The application appears to evaluate user input as code.<p> It was instructed to sleep for 0ms, and a response time of <b>" + dummyTime + "</b>ms was observed. <br/>It was then instructed to sleep for "+delayTarget+"ms, which resulted in a response time of <b>" + timer + "</b>ms.</p>", |
| 110 | "Firm", |
| 111 | CustomScanIssue.severity.High |
nothing calls this directly
no test coverage detected