gsd-2020-14001
Vulnerability from gsd
Modified
2020-06-28 00:00
Details
The kramdown gem before 2.3.0 for Ruby processes the template option inside Kramdown documents by default, which allows unintended read access (such as template="/etc/passwd") or unintended embedded Ruby code execution (such as a string that begins with template="string://<%= `). NOTE: kramdown is used in Jekyll, GitLab Pages, GitHub Pages, and Thredded Forum.
Aliases
Aliases
CVE-2020-14001


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-14001",
    "description": "The kramdown gem before 2.3.0 for Ruby processes the template option inside Kramdown documents by default, which allows unintended read access (such as template=\"/etc/passwd\") or unintended embedded Ruby code execution (such as a string that begins with template=\"string://\u003c%= `). NOTE: kramdown is used in Jekyll, GitLab Pages, GitHub Pages, and Thredded Forum.",
    "id": "GSD-2020-14001",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-14001.html",
      "https://www.debian.org/security/2020/dsa-4743",
      "https://ubuntu.com/security/CVE-2020-14001"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "kramdown",
            "purl": "pkg:gem/kramdown"
          }
        }
      ],
      "aliases": [
        "CVE-2020-14001",
        "GHSA-mqm2-cgpr-p4m6"
      ],
      "details": "The kramdown gem before 2.3.0 for Ruby processes the template option inside\nKramdown documents by default, which allows unintended read access (such as\ntemplate=\"/etc/passwd\") or unintended embedded Ruby code execution (such as a\nstring that begins with template=\"string://\u003c%= `). NOTE: kramdown is used in\nJekyll, GitLab Pages, GitHub Pages, and Thredded Forum.\n",
      "id": "GSD-2020-14001",
      "modified": "2020-06-28T00:00:00.000Z",
      "published": "2020-06-28T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://github.com/advisories/GHSA-mqm2-cgpr-p4m6"
        }
      ],
      "schema_version": "1.4.0",
      "severity": [
        {
          "score": 7.5,
          "type": "CVSS_V2"
        },
        {
          "score": 9.8,
          "type": "CVSS_V3"
        }
      ],
      "summary": "Unintended read access in kramdown gem"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2020-14001",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
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              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
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          }
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        "reference_data": [
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            "refsource": "MISC",
            "url": "https://github.com/gettalong/kramdown"
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            "refsource": "MISC",
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          },
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            "url": "https://lists.apache.org/thread.html/r96df7899fbb456fe2705882f710a0c8e8614b573fbffd8d12e3f54d2@%3Cnotifications.fluo.apache.org%3E"
          },
          {
            "name": "[debian-lts-announce] 20200809 [SECURITY] [DLA 2316-1] ruby-kramdown security update",
            "refsource": "MLIST",
            "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00014.html"
          },
          {
            "name": "DSA-4743",
            "refsource": "DEBIAN",
            "url": "https://www.debian.org/security/2020/dsa-4743"
          },
          {
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          },
          {
            "name": "USN-4562-1",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/4562-1/"
          }
        ]
      }
    },
    "github.com/rubysec/ruby-advisory-db": {
      "cve": "2020-14001",
      "cvss_v2": 7.5,
      "cvss_v3": 9.8,
      "date": "2020-06-28",
      "description": "The kramdown gem before 2.3.0 for Ruby processes the template option inside\nKramdown documents by default, which allows unintended read access (such as\ntemplate=\"/etc/passwd\") or unintended embedded Ruby code execution (such as a\nstring that begins with template=\"string://\u003c%= `). NOTE: kramdown is used in\nJekyll, GitLab Pages, GitHub Pages, and Thredded Forum.\n",
      "gem": "kramdown",
      "ghsa": "mqm2-cgpr-p4m6",
      "patched_versions": [
        "\u003e= 2.3.0"
      ],
      "title": "Unintended read access in kramdown gem",
      "url": "https://github.com/advisories/GHSA-mqm2-cgpr-p4m6"
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c2.3.0",
          "affected_versions": "All versions before 2.3.0",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-74",
            "CWE-937"
          ],
          "date": "2021-07-21",
          "description": "The kramdown gem processes the template option inside Kramdown documents by default, which allows unintended read access (such as `template=\"`/etc/passwd`\"`) or unintended embedded Ruby code execution.",
          "fixed_versions": [
            "2.3.0"
          ],
          "identifier": "CVE-2020-14001",
          "identifiers": [
            "CVE-2020-14001"
          ],
          "not_impacted": "All versions starting from 2.3.0",
          "package_slug": "gem/kramdown",
          "pubdate": "2020-07-17",
          "solution": "Upgrade to version 2.3.0 or above.",
          "title": "Injection Vulnerability",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-14001",
            "https://kramdown.gettalong.org",
            "https://kramdown.gettalong.org/news.html"
          ],
          "uuid": "f983bf7e-3d1e-431d-8f47-8a11c0b1b210"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
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        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:kramdown_project:kramdown:*:*:*:*:*:ruby:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.3.0",
                "vulnerable": true
              }
            ],
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          },
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            "children": [],
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 7.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2022-04-28T18:57Z",
      "publishedDate": "2020-07-17T16:15Z"
    }
  }
}


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