gsd-2018-20843
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).
Aliases
Aliases
CVE-2018-20843


To clipboard 

{
  "GSD": {
    "alias": "CVE-2018-20843",
    "description": "In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).",
    "id": "GSD-2018-20843",
    "references": [
      "https://www.suse.com/security/cve/CVE-2018-20843.html",
      "https://www.debian.org/security/2019/dsa-4472",
      "https://access.redhat.com/errata/RHSA-2020:4846",
      "https://access.redhat.com/errata/RHSA-2020:4484",
      "https://access.redhat.com/errata/RHSA-2020:3952",
      "https://access.redhat.com/errata/RHSA-2020:2646",
      "https://access.redhat.com/errata/RHSA-2020:2644",
      "https://ubuntu.com/security/CVE-2018-20843",
      "https://advisories.mageia.org/CVE-2018-20843.html",
      "https://alas.aws.amazon.com/cve/html/CVE-2018-20843.html",
      "https://linux.oracle.com/cve/CVE-2018-20843.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
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      "id": "GSD-2018-20843",
      "modified": "2023-12-13T01:22:29.513122Z",
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    }
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          "cwe_ids": [
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            "CWE-611",
            "CWE-937"
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          "date": "2019-06-26",
          "description": "`libexpat` in Expat, XML input including XML names that contain many colons could make the XML parser consume a high amount of RAM and CPU resources while processing, leading to a possible denial-of-service attack.",
          "fixed_versions": [
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          "not_impacted": "All versions starting from 2.2.7",
          "package_slug": "npm/node-expat",
          "pubdate": "2019-06-24",
          "solution": "Upgrade to version 2.3.0 or above.",
          "title": "Improper Restriction of XML External Entity Reference",
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      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 7.8,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 6.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-04-18T17:17Z",
      "publishedDate": "2019-06-24T17:15Z"
    }
  }
}


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