CVE-2021-39933
Vulnerability from cvelistv5
Published
2021-12-13 15:47
Modified
2024-08-04 02:20
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Summary
An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.10 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. A regular expression used for handling user input (notes, comments, etc) was susceptible to catastrophic backtracking that could cause a DOS attack.
References
cve@gitlab.comhttps://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39933.jsonThird Party Advisory
cve@gitlab.comhttps://gitlab.com/gitlab-org/gitlab/-/issues/340449Broken Link
cve@gitlab.comhttps://hackerone.com/reports/1320077Permissions Required, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39933.jsonThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://gitlab.com/gitlab-org/gitlab/-/issues/340449Broken Link
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/1320077Permissions Required, Third Party Advisory
Impacted products
Vendor Product Version
GitLab GitLab Version: >=12.10, <14.3.6
Version: >=14.4, <14.4.4
Version: >=14.5, <14.5.2
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
   containers: {
      adp: [
         {
            providerMetadata: {
               dateUpdated: "2024-08-04T02:20:34.065Z",
               orgId: "af854a3a-2127-422b-91ae-364da2661108",
               shortName: "CVE",
            },
            references: [
               {
                  tags: [
                     "x_refsource_MISC",
                     "x_transferred",
                  ],
                  url: "https://gitlab.com/gitlab-org/gitlab/-/issues/340449",
               },
               {
                  tags: [
                     "x_refsource_MISC",
                     "x_transferred",
                  ],
                  url: "https://hackerone.com/reports/1320077",
               },
               {
                  tags: [
                     "x_refsource_CONFIRM",
                     "x_transferred",
                  ],
                  url: "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39933.json",
               },
            ],
            title: "CVE Program Container",
         },
      ],
      cna: {
         affected: [
            {
               product: "GitLab",
               vendor: "GitLab",
               versions: [
                  {
                     status: "affected",
                     version: ">=12.10, <14.3.6",
                  },
                  {
                     status: "affected",
                     version: ">=14.4, <14.4.4",
                  },
                  {
                     status: "affected",
                     version: ">=14.5, <14.5.2",
                  },
               ],
            },
         ],
         credits: [
            {
               lang: "en",
               value: "Thanks @hashkitten, for reporting this vulnerability through our HackerOne bug bounty program",
            },
         ],
         descriptions: [
            {
               lang: "en",
               value: "An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.10 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. A regular expression used for handling user input (notes, comments, etc) was susceptible to catastrophic backtracking that could cause a DOS attack.",
            },
         ],
         metrics: [
            {
               cvssV3_1: {
                  attackComplexity: "LOW",
                  attackVector: "NETWORK",
                  availabilityImpact: "LOW",
                  baseScore: 4.3,
                  baseSeverity: "MEDIUM",
                  confidentialityImpact: "NONE",
                  integrityImpact: "NONE",
                  privilegesRequired: "LOW",
                  scope: "UNCHANGED",
                  userInteraction: "NONE",
                  vectorString: "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
                  version: "3.1",
               },
            },
         ],
         problemTypes: [
            {
               descriptions: [
                  {
                     description: "Uncontrolled resource consumption in GitLab",
                     lang: "en",
                     type: "text",
                  },
               ],
            },
         ],
         providerMetadata: {
            dateUpdated: "2021-12-13T15:47:53",
            orgId: "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
            shortName: "GitLab",
         },
         references: [
            {
               tags: [
                  "x_refsource_MISC",
               ],
               url: "https://gitlab.com/gitlab-org/gitlab/-/issues/340449",
            },
            {
               tags: [
                  "x_refsource_MISC",
               ],
               url: "https://hackerone.com/reports/1320077",
            },
            {
               tags: [
                  "x_refsource_CONFIRM",
               ],
               url: "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39933.json",
            },
         ],
         x_legacyV4Record: {
            CVE_data_meta: {
               ASSIGNER: "cve@gitlab.com",
               ID: "CVE-2021-39933",
               STATE: "PUBLIC",
            },
            affects: {
               vendor: {
                  vendor_data: [
                     {
                        product: {
                           product_data: [
                              {
                                 product_name: "GitLab",
                                 version: {
                                    version_data: [
                                       {
                                          version_value: ">=12.10, <14.3.6",
                                       },
                                       {
                                          version_value: ">=14.4, <14.4.4",
                                       },
                                       {
                                          version_value: ">=14.5, <14.5.2",
                                       },
                                    ],
                                 },
                              },
                           ],
                        },
                        vendor_name: "GitLab",
                     },
                  ],
               },
            },
            credit: [
               {
                  lang: "eng",
                  value: "Thanks @hashkitten, for reporting this vulnerability through our HackerOne bug bounty program",
               },
            ],
            data_format: "MITRE",
            data_type: "CVE",
            data_version: "4.0",
            description: {
               description_data: [
                  {
                     lang: "eng",
                     value: "An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.10 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. A regular expression used for handling user input (notes, comments, etc) was susceptible to catastrophic backtracking that could cause a DOS attack.",
                  },
               ],
            },
            impact: {
               cvss: {
                  attackComplexity: "LOW",
                  attackVector: "NETWORK",
                  availabilityImpact: "LOW",
                  baseScore: 4.2,
                  baseSeverity: "MEDIUM",
                  confidentialityImpact: "NONE",
                  integrityImpact: "NONE",
                  privilegesRequired: "LOW",
                  scope: "UNCHANGED",
                  userInteraction: "NONE",
                  vectorString: "AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
                  version: "3.1",
               },
            },
            problemtype: {
               problemtype_data: [
                  {
                     description: [
                        {
                           lang: "eng",
                           value: "Uncontrolled resource consumption in GitLab",
                        },
                     ],
                  },
               ],
            },
            references: {
               reference_data: [
                  {
                     name: "https://gitlab.com/gitlab-org/gitlab/-/issues/340449",
                     refsource: "MISC",
                     url: "https://gitlab.com/gitlab-org/gitlab/-/issues/340449",
                  },
                  {
                     name: "https://hackerone.com/reports/1320077",
                     refsource: "MISC",
                     url: "https://hackerone.com/reports/1320077",
                  },
                  {
                     name: "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39933.json",
                     refsource: "CONFIRM",
                     url: "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39933.json",
                  },
               ],
            },
         },
      },
   },
   cveMetadata: {
      assignerOrgId: "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
      assignerShortName: "GitLab",
      cveId: "CVE-2021-39933",
      datePublished: "2021-12-13T15:47:53",
      dateReserved: "2021-08-23T00:00:00",
      dateUpdated: "2024-08-04T02:20:34.065Z",
      state: "PUBLISHED",
   },
   dataType: "CVE_RECORD",
   dataVersion: "5.1",
   "vulnerability-lookup:meta": {
      nvd: "{\"cve\":{\"id\":\"CVE-2021-39933\",\"sourceIdentifier\":\"cve@gitlab.com\",\"published\":\"2021-12-13T16:15:09.250\",\"lastModified\":\"2024-11-21T06:20:36.157\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.10 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. A regular expression used for handling user input (notes, comments, etc) was susceptible to catastrophic backtracking that could cause a DOS attack.\"},{\"lang\":\"es\",\"value\":\"Se ha detectado un problema en GitLab CE/EE afectando a todas las versiones a partir de 12.10 anteriores a 14.3.6, a todas las versiones a partir de 14.4 anteriores a 14.4.4, a todas las versiones a partir de 14.5 anteriores a 14.5.2. Una expresión regular usada para el manejo de la entrada del usuario (notas, comentarios, etc) era susceptible de un retroceso catastrófico que podía causar un ataque DOS\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"cve@gitlab.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":4.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.8,\"impactScore\":1.4},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:S/C:N/I:N/A:P\",\"baseScore\":4.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-1333\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*\",\"versionStartIncluding\":\"12.10.0\",\"versionEndExcluding\":\"14.3.6\",\"matchCriteriaId\":\"F093F933-8552-46D5-8B05-34587C104DFF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"12.10.0\",\"versionEndExcluding\":\"14.3.6\",\"matchCriteriaId\":\"47495883-D8D0-485E-9920-993CF00199FF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*\",\"versionStartIncluding\":\"14.4.0\",\"versionEndExcluding\":\"14.4.4\",\"matchCriteriaId\":\"1E801B5F-9C94-4CB2-89ED-D071E567132C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"14.4.0\",\"versionEndExcluding\":\"14.4.4\",\"matchCriteriaId\":\"7C38F838-02EA-4E2F-8493-57DD401EF911\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*\",\"versionStartIncluding\":\"14.5.0\",\"versionEndExcluding\":\"14.5.2\",\"matchCriteriaId\":\"95F59DF7-707C-4C43-8352-8115DAF1C533\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"14.5.0\",\"versionEndExcluding\":\"14.5.2\",\"matchCriteriaId\":\"64F26CC0-C99A-4748-963B-944F39E4B647\"}]}]}],\"references\":[{\"url\":\"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39933.json\",\"source\":\"cve@gitlab.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://gitlab.com/gitlab-org/gitlab/-/issues/340449\",\"source\":\"cve@gitlab.com\",\"tags\":[\"Broken Link\"]},{\"url\":\"https://hackerone.com/reports/1320077\",\"source\":\"cve@gitlab.com\",\"tags\":[\"Permissions Required\",\"Third Party Advisory\"]},{\"url\":\"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39933.json\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://gitlab.com/gitlab-org/gitlab/-/issues/340449\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\"]},{\"url\":\"https://hackerone.com/reports/1320077\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Permissions Required\",\"Third Party Advisory\"]}]}}",
   },
}


Log in or create an account to share your comment.

Security Advisory comment format.

This schema specifies the format of a comment related to a security advisory.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.