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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            "CVE-2018-20843",
         ],
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         id: "GSD-2018-20843",
         modified: "2023-12-13T01:22:29.513122Z",
         schema_version: "1.4.0",
      },
   },
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               cvss_v3: "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
               cwe_ids: [
                  "CWE-1035",
                  "CWE-611",
                  "CWE-937",
               ],
               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: [
                  "2.3.0",
               ],
               identifier: "CVE-2018-20843",
               identifiers: [
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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",
               urls: [
                  "https://nvd.nist.gov/vuln/detail/CVE-2018-20843",
                  "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226",
                  "https://github.com/libexpat/libexpat/issues/186",
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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,
               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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