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GSD-2020-36327

Vulnerability from gsd - Updated: 2020-09-30 00:00
Details
Bundler 1.16.0 through 2.2.9 and 2.2.11 through 2.2.17 sometimes chooses a dependency source based on the highest gem version number, which means that a rogue gem found at a public source may be chosen, even if the intended choice was a private gem that is a dependency of another private gem that is explicitly depended on by the application.
Aliases
Aliases
CVE-2020-36327
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{
  "GSD": {
    "alias": "CVE-2020-36327",
    "description": "Bundler 1.16.0 through 2.2.9 and 2.2.11 through 2.2.16 sometimes chooses a dependency source based on the highest gem version number, which means that a rogue gem found at a public source may be chosen, even if the intended choice was a private gem that is a dependency of another private gem that is explicitly depended on by the application. NOTE: it is not correct to use CVE-2021-24105 for every \"Dependency Confusion\" issue in every product.",
    "id": "GSD-2020-36327",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-36327.html",
      "https://access.redhat.com/errata/RHSA-2022:0708",
      "https://access.redhat.com/errata/RHSA-2022:0582",
      "https://access.redhat.com/errata/RHSA-2022:0581",
      "https://access.redhat.com/errata/RHSA-2022:0548",
      "https://access.redhat.com/errata/RHSA-2022:0547",
      "https://access.redhat.com/errata/RHSA-2022:0546",
      "https://access.redhat.com/errata/RHSA-2022:0545",
      "https://access.redhat.com/errata/RHSA-2022:0544",
      "https://access.redhat.com/errata/RHSA-2022:0543",
      "https://access.redhat.com/errata/RHSA-2021:3982",
      "https://access.redhat.com/errata/RHSA-2021:3559",
      "https://access.redhat.com/errata/RHSA-2021:3020",
      "https://advisories.mageia.org/CVE-2020-36327.html",
      "https://security.archlinux.org/CVE-2020-36327",
      "https://linux.oracle.com/cve/CVE-2020-36327.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "bundler",
            "purl": "pkg:gem/bundler"
          }
        }
      ],
      "aliases": [
        "CVE-2020-36327",
        "GHSA-fp4w-jxhp-m23p"
      ],
      "details": "Bundler 1.16.0 through 2.2.9 and 2.2.11 through 2.2.17 sometimes chooses a\ndependency source based on the highest gem version number, which means that a\nrogue gem found at a public source may be chosen, even if the intended choice\nwas a private gem that is a dependency of another private gem that is\nexplicitly depended on by the application.\n",
      "id": "GSD-2020-36327",
      "modified": "2020-09-30T00:00:00.000Z",
      "published": "2020-09-30T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://github.com/rubygems/rubygems/issues/3982"
        },
        {
          "type": "WEB",
          "url": "https://bundler.io/blog/2021/02/15/a-more-secure-bundler-we-fixed-our-source-priorities.html"
        },
        {
          "type": "WEB",
          "url": "https://mensfeld.pl/2021/02/rubygems-dependency-confusion-attack-side-of-things/"
        },
        {
          "type": "WEB",
          "url": "https://www.zofrex.com/blog/2021/04/29/bundler-still-vulnerable-dependency-confusion-cve-2020-36327/"
        },
        {
          "type": "WEB",
          "url": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-24105"
        },
        {
          "type": "WEB",
          "url": "https://github.com/rubygems/rubygems/pull/4609"
        }
      ],
      "related": [
        "CVE-2021-24105"
      ],
      "schema_version": "1.4.0",
      "severity": [
        {
          "score": 8.8,
          "type": "CVSS_V3"
        }
      ],
      "summary": "Dependency Confusion in Bundler with Implicit Private Dependencies"
    }
  },
  "namespaces": {
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        "ID": "CVE-2020-36327",
        "STATE": "PUBLIC"
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            "value": "Bundler 1.16.0 through 2.2.9 and 2.2.11 through 2.2.16 sometimes chooses a dependency source based on the highest gem version number, which means that a rogue gem found at a public source may be chosen, even if the intended choice was a private gem that is a dependency of another private gem that is explicitly depended on by the application. NOTE: it is not correct to use CVE-2021-24105 for every \"Dependency Confusion\" issue in every product."
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          },
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            "url": "https://www.zofrex.com/blog/2021/04/29/bundler-still-vulnerable-dependency-confusion-cve-2020-36327/"
          },
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            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MWXHK5UUHVSHF7HTHMX6JY3WXDVNIHSL/"
          }
        ]
      }
    },
    "github.com/rubysec/ruby-advisory-db": {
      "cve": "2020-36327",
      "cvss_v3": 8.8,
      "date": "2020-09-30",
      "description": "Bundler 1.16.0 through 2.2.9 and 2.2.11 through 2.2.17 sometimes chooses a\ndependency source based on the highest gem version number, which means that a\nrogue gem found at a public source may be chosen, even if the intended choice\nwas a private gem that is a dependency of another private gem that is\nexplicitly depended on by the application.\n",
      "gem": "bundler",
      "ghsa": "fp4w-jxhp-m23p",
      "patched_versions": [
        "\u003e= 2.2.18",
        "2.2.10"
      ],
      "related": {
        "cve": [
          "2021-24105"
        ],
        "url": [
          "https://bundler.io/blog/2021/02/15/a-more-secure-bundler-we-fixed-our-source-priorities.html",
          "https://mensfeld.pl/2021/02/rubygems-dependency-confusion-attack-side-of-things/",
          "https://www.zofrex.com/blog/2021/04/29/bundler-still-vulnerable-dependency-confusion-cve-2020-36327/",
          "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-24105",
          "https://github.com/rubygems/rubygems/pull/4609"
        ]
      },
      "title": "Dependency Confusion in Bundler with Implicit Private Dependencies",
      "unaffected_versions": [
        "\u003c 1.16.0"
      ],
      "url": "https://github.com/rubygems/rubygems/issues/3982"
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003e=1.16.0 \u003c2.2.16",
          "affected_versions": "All versions starting from 1.16.0 before 2.2.16",
          "cvss_v2": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2021-07-30",
          "description": "Bundler sometimes chooses a dependency source based on the highest gem version number, which means that a rogue gem found at a public source may be chosen, even if the intended choice was a private gem that is a dependency of another private gem that is explicitly depended on by the application.",
          "fixed_versions": [
            "2.2.16"
          ],
          "identifier": "CVE-2020-36327",
          "identifiers": [
            "CVE-2020-36327"
          ],
          "not_impacted": "All versions before 1.16.0, all versions starting from 2.2.16",
          "package_slug": "gem/bundler",
          "pubdate": "2021-04-29",
          "solution": "Upgrade to version 2.2.16 or above.",
          "title": "Dependency Confusion",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-36327",
            "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-24105",
            "https://bundler.io/blog/2021/02/15/a-more-secure-bundler-we-fixed-our-source-priorities.html"
          ],
          "uuid": "2688d2e6-d38c-41d8-8dd0-9521648f6533"
        }
      ]
    },
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                "versionEndExcluding": "2.2.10",
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          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 9.3,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "COMPLETE",
            "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
            "version": "2.0"
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          "exploitabilityScore": 8.6,
          "impactScore": 10.0,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2022-04-05T18:06Z",
      "publishedDate": "2021-04-29T03:15Z"
    }
  }
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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