gsd-2021-27291
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
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.
Aliases
Aliases
CVE-2021-27291


To clipboard 

{
   GSD: {
      alias: "CVE-2021-27291",
      description: "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.",
      id: "GSD-2021-27291",
      references: [
         "https://www.suse.com/security/cve/CVE-2021-27291.html",
         "https://www.debian.org/security/2021/dsa-4889",
         "https://www.debian.org/security/2021/dsa-4878",
         "https://access.redhat.com/errata/RHSA-2021:4151",
         "https://access.redhat.com/errata/RHSA-2021:4150",
         "https://access.redhat.com/errata/RHSA-2021:4139",
         "https://access.redhat.com/errata/RHSA-2021:3252",
         "https://access.redhat.com/errata/RHSA-2021:0781",
         "https://ubuntu.com/security/CVE-2021-27291",
         "https://advisories.mageia.org/CVE-2021-27291.html",
         "https://security.archlinux.org/CVE-2021-27291",
         "https://linux.oracle.com/cve/CVE-2021-27291.html",
      ],
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2021-27291",
         ],
         details: "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.",
         id: "GSD-2021-27291",
         modified: "2023-12-13T01:23:35.936826Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
      "cve.org": {
         CVE_data_meta: {
            ASSIGNER: "cve@mitre.org",
            ID: "CVE-2021-27291",
            STATE: "PUBLIC",
         },
         affects: {
            vendor: {
               vendor_data: [
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                     product: {
                        product_data: [
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                              product_name: "n/a",
                              version: {
                                 version_data: [
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               },
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         },
         references: {
            reference_data: [
               {
                  name: "https://gist.github.com/b-c-ds/b1a2cc0c68a35c57188575eb496de5ce",
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                  url: "https://gist.github.com/b-c-ds/b1a2cc0c68a35c57188575eb496de5ce",
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               {
                  name: "https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14",
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                  url: "https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14",
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               {
                  name: "[debian-lts-announce] 20210319 [SECURITY] [DLA 2600-1] pygments security update",
                  refsource: "MLIST",
                  url: "https://lists.debian.org/debian-lts-announce/2021/03/msg00024.html",
               },
               {
                  name: "DSA-4878",
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                  url: "https://www.debian.org/security/2021/dsa-4878",
               },
               {
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                  name: "[debian-lts-announce] 20210505 [SECURITY] [DLA 2648-1] mediawiki security update",
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               },
               {
                  name: "FEDORA-2021-166dfc62b2",
                  refsource: "FEDORA",
                  url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GSJRFHALQ7E3UV4FFMFU2YQ6LUDHAI55/",
               },
               {
                  name: "FEDORA-2021-3f975f68c8",
                  refsource: "FEDORA",
                  url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WSLD67LFGXOX2K5YNESSWAS4AGZIJTUQ/",
               },
               {
                  name: "[debian-lts-announce] 20210506 [SECURITY] [DLA 2648-2] mediawiki regression update",
                  refsource: "MLIST",
                  url: "https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html",
               },
            ],
         },
      },
      "gitlab.com": {
         advisories: [
            {
               affected_range: ">=1.1,<2.7.4",
               affected_versions: "All versions starting from 1.1 before 2.7.4",
               cvss_v2: "AV:N/AC:L/Au:N/C:N/I:N/A:P",
               cvss_v3: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
               cwe_ids: [
                  "CWE-1035",
                  "CWE-1333",
                  "CWE-937",
               ],
               date: "2023-08-08",
               description: "In pygments 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 is vulnerable to ReDoS. By crafting malicious input, an attacker can cause a denial of service.",
               fixed_versions: [
                  "2.7.4",
               ],
               identifier: "CVE-2021-27291",
               identifiers: [
                  "CVE-2021-27291",
               ],
               not_impacted: "All versions before 1.1, all versions starting from 2.7.4",
               package_slug: "pypi/Pygments",
               pubdate: "2021-03-17",
               solution: "Upgrade to version 2.7.4 or above.",
               title: "Uncontrolled Resource Consumption",
               urls: [
                  "https://nvd.nist.gov/vuln/detail/CVE-2021-27291",
               ],
               uuid: "ae31c2cb-26c5-4e6f-85db-15c6982e4e17",
            },
         ],
      },
      "nvd.nist.gov": {
         configurations: {
            CVE_data_version: "4.0",
            nodes: [
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:a:pygments:pygments:*:*:*:*:*:*:*:*",
                        cpe_name: [],
                        versionEndExcluding: "2.7.4",
                        versionStartIncluding: "1.1",
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
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         },
         cve: {
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               ID: "CVE-2021-27291",
            },
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            data_version: "4.0",
            description: {
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                  },
               ],
            },
            problemtype: {
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                           value: "NVD-CWE-Other",
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         },
         impact: {
            baseMetricV2: {
               acInsufInfo: false,
               cvssV2: {
                  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,
               severity: "MEDIUM",
               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: "2022-05-23T22:35Z",
         publishedDate: "2021-03-17T13:15Z",
      },
   },
}


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