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Pscanbeta - add polyfill.io scan rule
Signed-off-by: Simon Bennetts <psiinon@gmail.com>
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...eta/src/main/java/org/zaproxy/zap/extension/pscanrulesBeta/PolyfillCdnScriptScanRule.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| /* | ||
| * Zed Attack Proxy (ZAP) and its related class files. | ||
| * | ||
| * ZAP is an HTTP/HTTPS proxy for assessing web application security. | ||
| * | ||
| * Copyright 2024 The ZAP Development Team | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package org.zaproxy.zap.extension.pscanrulesBeta; | ||
|
|
||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.regex.Matcher; | ||
| import java.util.regex.Pattern; | ||
| import net.htmlparser.jericho.Element; | ||
| import net.htmlparser.jericho.HTMLElementName; | ||
| import net.htmlparser.jericho.Source; | ||
| import org.parosproxy.paros.Constant; | ||
| import org.parosproxy.paros.core.scanner.Alert; | ||
| import org.parosproxy.paros.network.HttpMessage; | ||
| import org.zaproxy.addon.commonlib.CommonAlertTag; | ||
| import org.zaproxy.zap.extension.pscan.PluginPassiveScanner; | ||
|
|
||
| public class PolyfillCdnScriptScanRule extends PluginPassiveScanner | ||
| implements CommonPassiveScanRuleInfo { | ||
|
|
||
| /** Prefix for internationalised messages used by this rule */ | ||
| private static final String MESSAGE_PREFIX = "pscanbeta.polyfillcdnscript."; | ||
|
|
||
| private static final Map<String, String> ALERT_TAGS = | ||
| CommonAlertTag.toMap( | ||
| CommonAlertTag.OWASP_2021_A06_VULN_COMP, | ||
| CommonAlertTag.OWASP_2017_A09_VULN_COMP); | ||
|
|
||
| private static final int PLUGIN_ID = 10115; | ||
|
|
||
| private static Pattern POLYFILL_IO = | ||
| Pattern.compile("http[s]?://.*polyfill\\.io/.*", Pattern.CASE_INSENSITIVE); | ||
|
|
||
| @Override | ||
| public void scanHttpResponseReceive(HttpMessage msg, int id, Source source) { | ||
| if (msg.getResponseBody().length() > 0 && msg.getResponseHeader().isHtml()) { | ||
| List<Element> sourceElements = source.getAllElements(HTMLElementName.SCRIPT); | ||
| boolean alertRaised = false; | ||
| if (sourceElements != null) { | ||
| for (Element sourceElement : sourceElements) { | ||
| String src = sourceElement.getAttributeValue("src"); | ||
| if (src != null && POLYFILL_IO.matcher(src).matches()) { | ||
| this.createHighConfidenceAlert(src, sourceElement.toString()).raise(); | ||
| alertRaised = true; | ||
| } | ||
| } | ||
| if (alertRaised) { | ||
| // Definitely an issue, no point checking the script contents | ||
| return; | ||
| } | ||
| // Check the script contents, in case they are loading scripts via JS | ||
| for (Element sourceElement : sourceElements) { | ||
| String contents = sourceElement.getContent().toString(); | ||
| Matcher matcher = POLYFILL_IO.matcher(contents); | ||
| if (matcher.find()) { | ||
| this.createLowConfidenceAlert(null, matcher.group(0)).raise(); | ||
| break; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private AlertBuilder createHighConfidenceAlert(String param, String evidence) { | ||
| return this.createAlert( | ||
| Alert.CONFIDENCE_HIGH, | ||
| Constant.messages.getString(MESSAGE_PREFIX + "desc1"), | ||
| param, | ||
| evidence, | ||
| 1); | ||
| } | ||
|
|
||
| private AlertBuilder createLowConfidenceAlert(String param, String evidence) { | ||
| return this.createAlert( | ||
| Alert.CONFIDENCE_LOW, | ||
| Constant.messages.getString(MESSAGE_PREFIX + "desc2"), | ||
| param, | ||
| evidence, | ||
| 2); | ||
| } | ||
|
|
||
| private AlertBuilder createAlert( | ||
| int confidence, String description, String param, String evidence, int alertRef) { | ||
| return newAlert() | ||
| .setRisk(getRisk()) | ||
| .setConfidence(confidence) | ||
| .setDescription(description) | ||
| .setParam(param) | ||
| .setSolution(Constant.messages.getString(MESSAGE_PREFIX + "soln")) | ||
| .setReference(Constant.messages.getString(MESSAGE_PREFIX + "refs")) | ||
| .setEvidence(evidence) | ||
| .setCweId(829) // CWE Id 829 - Inclusion of Functionality from Untrusted Control | ||
| // Sphere) | ||
| .setWascId(15) // WASC-15: Application Misconfiguration) | ||
| .setAlertRef(PLUGIN_ID + "-" + alertRef); | ||
| } | ||
|
|
||
| @Override | ||
| public List<Alert> getExampleAlerts() { | ||
| return List.of( | ||
| createHighConfidenceAlert( | ||
| "https://cdn.polyfill.io/malicious.js", | ||
| "<script type=\"text/javascript\" src=\"https://cdn.polyfill.io/malicious.js\"></script>") | ||
| .build(), | ||
| createLowConfidenceAlert( | ||
| "https://cdn.polyfill.io/malicious.js", | ||
| "<script> script = \"https://cdn.polyfill.io/malicious.js\"; </script>") | ||
| .build()); | ||
| } | ||
|
|
||
| @Override | ||
| public int getPluginId() { | ||
| return PLUGIN_ID; | ||
| } | ||
|
|
||
| public int getRisk() { | ||
| return Alert.RISK_HIGH; | ||
| } | ||
|
|
||
| @Override | ||
| public String getName() { | ||
| return Constant.messages.getString(MESSAGE_PREFIX + "name"); | ||
| } | ||
|
|
||
| @Override | ||
| public Map<String, String> getAlertTags() { | ||
| return ALERT_TAGS; | ||
| } | ||
| } |
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