fkie_cve-2021-27291
Vulnerability from fkie_nvd
Published
2021-03-17 13:15
Modified
2024-11-21 05:57
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
In pygments 1.1+, fixed in 2.7.4, the lexers used to parse programming languages rely heavily on regular expressions. Some of the regular expressions have exponential or cubic worst-case complexity and are vulnerable to ReDoS. By crafting malicious input, an attacker can cause a denial of service.
References
cve@mitre.orghttps://gist.github.com/b-c-ds/b1a2cc0c68a35c57188575eb496de5ceExploit, Third Party Advisory
cve@mitre.orghttps://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14Patch, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2021/03/msg00024.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2021/05/msg00003.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2021/05/msg00006.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSJRFHALQ7E3UV4FFMFU2YQ6LUDHAI55/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSLD67LFGXOX2K5YNESSWAS4AGZIJTUQ/
cve@mitre.orghttps://www.debian.org/security/2021/dsa-4878Third Party Advisory
cve@mitre.orghttps://www.debian.org/security/2021/dsa-4889Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://gist.github.com/b-c-ds/b1a2cc0c68a35c57188575eb496de5ceExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/03/msg00024.htmlMailing List, 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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSJRFHALQ7E3UV4FFMFU2YQ6LUDHAI55/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSLD67LFGXOX2K5YNESSWAS4AGZIJTUQ/
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2021/dsa-4878Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2021/dsa-4889Third Party Advisory
Impacted products
Vendor Product Version
pygments pygments *
debian debian_linux 9.0
debian debian_linux 10.0
fedoraproject fedora 32
fedoraproject fedora 33


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:pygments:pygments:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "CD77E0B1-BE2B-4B95-91AA-AD9AAEFD6DA8",
                     versionEndExcluding: "2.7.4",
                     versionStartIncluding: "1.1",
                     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",
            },
         ],
      },
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
                     matchCriteriaId: "36D96259-24BD-44E2-96D9-78CE1D41F956",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                     matchCriteriaId: "E460AA51-FCDA-46B9-AE97-E6676AA5E194",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In pygments 1.1+, fixed in 2.7.4, the lexers used to parse programming languages rely heavily on regular expressions. Some of the regular expressions have exponential or cubic worst-case complexity and are vulnerable to ReDoS. By crafting malicious input, an attacker can cause a denial of service.",
      },
      {
         lang: "es",
         value: "En pygments versión 1.1+, corregido en 2.7.4, los lexers usados para analizar unos lenguajes de programación dependen en gran medida en expresiones regulares. Algunas de las expresiones regulares presentan una complejidad exponencial o cúbica en el peor de los casos y son vulnerables a ReDoS. Al diseñar una entrada maliciosa, un atacante puede causar una denegación de servicio",
      },
   ],
   id: "CVE-2021-27291",
   lastModified: "2024-11-21T05:57:45.667",
   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: "2021-03-17T13:15:15.137",
   references: [
      {
         source: "cve@mitre.org",
         tags: [
            "Exploit",
            "Third Party Advisory",
         ],
         url: "https://gist.github.com/b-c-ds/b1a2cc0c68a35c57188575eb496de5ce",
      },
      {
         source: "cve@mitre.org",
         tags: [
            "Patch",
            "Third Party Advisory",
         ],
         url: "https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14",
      },
      {
         source: "cve@mitre.org",
         tags: [
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            "Third Party Advisory",
         ],
         url: "https://lists.debian.org/debian-lts-announce/2021/03/msg00024.html",
      },
      {
         source: "cve@mitre.org",
         tags: [
            "Mailing List",
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         ],
         url: "https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html",
      },
      {
         source: "cve@mitre.org",
         tags: [
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         url: "https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html",
      },
      {
         source: "cve@mitre.org",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSJRFHALQ7E3UV4FFMFU2YQ6LUDHAI55/",
      },
      {
         source: "cve@mitre.org",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSLD67LFGXOX2K5YNESSWAS4AGZIJTUQ/",
      },
      {
         source: "cve@mitre.org",
         tags: [
            "Third Party Advisory",
         ],
         url: "https://www.debian.org/security/2021/dsa-4878",
      },
      {
         source: "cve@mitre.org",
         tags: [
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         ],
         url: "https://www.debian.org/security/2021/dsa-4889",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
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            "Third Party Advisory",
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         url: "https://gist.github.com/b-c-ds/b1a2cc0c68a35c57188575eb496de5ce",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
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         url: "https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
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         url: "https://lists.debian.org/debian-lts-announce/2021/03/msg00024.html",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
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         url: "https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
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      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSJRFHALQ7E3UV4FFMFU2YQ6LUDHAI55/",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSLD67LFGXOX2K5YNESSWAS4AGZIJTUQ/",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
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         url: "https://www.debian.org/security/2021/dsa-4878",
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         url: "https://www.debian.org/security/2021/dsa-4889",
      },
   ],
   sourceIdentifier: "cve@mitre.org",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-1333",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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