fkie_cve-2021-20270
Vulnerability from fkie_nvd
Published
2021-03-23 17:15
Modified
2024-11-21 05:46
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
An infinite loop in SMLLexer in Pygments versions 1.5 to 2.7.3 may lead to denial of service when performing syntax highlighting of a Standard ML (SML) source file, as demonstrated by input that only contains the "exception" keyword.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1922136Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2021/05/msg00003.htmlMailing List, Third Party Advisory
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2021/05/msg00006.htmlMailing List, Third Party Advisory
secalert@redhat.comhttps://www.debian.org/security/2021/dsa-4889Third Party Advisory
secalert@redhat.comhttps://www.oracle.com/security-alerts/cpuoct2021.htmlNot Applicable, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1922136Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/05/msg00003.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/05/msg00006.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2021/dsa-4889Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuoct2021.htmlNot Applicable, Third Party Advisory
Impacted products
Vendor Product Version
pygments pygments *
redhat openshift_container_platform 3.11
redhat openshift_container_platform 4.0
redhat openstack_platform 10.0
redhat software_collections -
redhat enterprise_linux 7.0
redhat enterprise_linux 8.0
fedoraproject fedora 33
debian debian_linux 9.0
debian debian_linux 10.0


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:pygments:pygments:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "EDBA76D7-FE9C-4C7F-9926-36D6A26F9713",
                     versionEndIncluding: "2.7.3",
                     versionStartIncluding: "1.5",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:*",
                     matchCriteriaId: "2F87326E-0B56-4356-A889-73D026DB1D4B",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*",
                     matchCriteriaId: "932D137F-528B-4526-9A89-CD59FA1AB0FE",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:redhat:openstack_platform:10.0:*:*:*:*:*:*:*",
                     matchCriteriaId: "542B31BD-5767-4B33-9201-40548D1223B3",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:redhat:software_collections:-:*:*:*:*:*:*:*",
                     matchCriteriaId: "749804DA-4B27-492A-9ABA-6BB562A6B3AC",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
                     matchCriteriaId: "142AD0DD-4CF3-4D74-9442-459CE3347E3A",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
                     matchCriteriaId: "F4CFF558-3C47-480D-A2F0-BABF26042943",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                     matchCriteriaId: "E460AA51-FCDA-46B9-AE97-E6676AA5E194",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                     matchCriteriaId: "DEECE5FC-CACF-4496-A3E7-164736409252",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                     matchCriteriaId: "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "An infinite loop in SMLLexer in Pygments versions 1.5 to 2.7.3 may lead to denial of service when performing syntax highlighting of a Standard ML (SML) source file, as demonstrated by input that only contains the \"exception\" keyword.",
      },
      {
         lang: "es",
         value: "Un bucle infinito en SMLLexer en Pygments versiones 1.5 hasta 2.7.3, puede conllevar a una denegación de servicio cuando se lleva a cabo el resaltado de sintaxis de un archivo fuente de Standard ML (SML), como es demostrado por la entrada que solo contiene la palabra clave \"exception\"",
      },
   ],
   id: "CVE-2021-20270",
   lastModified: "2024-11-21T05:46:15.097",
   metrics: {
      cvssMetricV2: [
         {
            acInsufInfo: false,
            baseSeverity: "MEDIUM",
            cvssData: {
               accessComplexity: "LOW",
               accessVector: "NETWORK",
               authentication: "NONE",
               availabilityImpact: "PARTIAL",
               baseScore: 5,
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               vectorString: "AV:N/AC:L/Au:N/C:N/I:N/A:P",
               version: "2.0",
            },
            exploitabilityScore: 10,
            impactScore: 2.9,
            obtainAllPrivilege: false,
            obtainOtherPrivilege: false,
            obtainUserPrivilege: false,
            source: "nvd@nist.gov",
            type: "Primary",
            userInteractionRequired: false,
         },
      ],
      cvssMetricV31: [
         {
            cvssData: {
               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,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2021-03-23T17:15:13.827",
   references: [
      {
         source: "secalert@redhat.com",
         tags: [
            "Issue Tracking",
            "Patch",
            "Third Party Advisory",
         ],
         url: "https://bugzilla.redhat.com/show_bug.cgi?id=1922136",
      },
      {
         source: "secalert@redhat.com",
         tags: [
            "Mailing List",
            "Third Party Advisory",
         ],
         url: "https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html",
      },
      {
         source: "secalert@redhat.com",
         tags: [
            "Mailing List",
            "Third Party Advisory",
         ],
         url: "https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html",
      },
      {
         source: "secalert@redhat.com",
         tags: [
            "Third Party Advisory",
         ],
         url: "https://www.debian.org/security/2021/dsa-4889",
      },
      {
         source: "secalert@redhat.com",
         tags: [
            "Not Applicable",
            "Third Party Advisory",
         ],
         url: "https://www.oracle.com/security-alerts/cpuoct2021.html",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
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            "Patch",
            "Third Party Advisory",
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         url: "https://bugzilla.redhat.com/show_bug.cgi?id=1922136",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Mailing List",
            "Third Party Advisory",
         ],
         url: "https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Mailing List",
            "Third Party Advisory",
         ],
         url: "https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
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         url: "https://www.debian.org/security/2021/dsa-4889",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Not Applicable",
            "Third Party Advisory",
         ],
         url: "https://www.oracle.com/security-alerts/cpuoct2021.html",
      },
   ],
   sourceIdentifier: "secalert@redhat.com",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-835",
            },
         ],
         source: "secalert@redhat.com",
         type: "Secondary",
      },
      {
         description: [
            {
               lang: "en",
               value: "CWE-835",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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