github - ghsa-vrjv-mxr7-vjf8

GHSA-VRJV-MXR7-VJF8

Vulnerability from github – Published: 2023-02-23 00:30 – Updated: 2024-09-30 20:22

Summary

markdown-it-py Denial of Service vulnerability

Details

Denial of service could be caused to markdown-it-py, before v2.2.0, if an attacker was allowed to force null assertions with specially crafted input.

Severity ?

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

7.1 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "markdown-it-py"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-26303"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-173"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-02-23T19:40:55Z",
    "nvd_published_at": "2023-02-23T00:15:00Z",
    "severity": "HIGH"
  },
  "details": "Denial of service could be caused to markdown-it-py, before v2.2.0, if an attacker was allowed to force null assertions with specially crafted input.",
  "id": "GHSA-vrjv-mxr7-vjf8",
  "modified": "2024-09-30T20:22:35Z",
  "published": "2023-02-23T00:30:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26303"
    },
    {
      "type": "WEB",
      "url": "https://github.com/executablebooks/markdown-it-py/pull/246"
    },
    {
      "type": "WEB",
      "url": "https://github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c"
    },
    {
      "type": "WEB",
      "url": "https://github.com/executablebooks/markdown-it-py/commit/ae03c6107dfa18e648f6fdd1280f5b89092d5d49"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/executablebooks/markdown-it-py"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/markdown-it-py/PYSEC-2023-24.yaml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "markdown-it-py Denial of Service vulnerability"
}

CVE-2023-26303 (GCVE-0-2023-26303)

Vulnerability from cvelistv5 – Published: 2023-02-22 23:44 – Updated: 2025-03-11 18:22

Summary

Denial of service could be caused to markdown-it-py, before v2.2.0, if an attacker was allowed to force null assertions with specially crafted input.

Severity ?

3.3 (Low)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-173

Assigner

canonical

References

URL

Tags

https://github.com/executablebooks/markdown-it-py…

patch

Impacted products

	Vendor	Product	Version
	Executable Books	markdown-it-py	Affected: 0 , < v2.2.0 (semver)

Credits

Mark Esler Chris Sewell

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T11:46:24.274Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "patch",
              "x_transferred"
            ],
            "url": "https://github.com/executablebooks/markdown-it-py/commit/ae03c6107dfa18e648f6fdd1280f5b89092d5d49"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-26303",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-11T18:22:03.295337Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-173",
                "description": "CWE-173 Improper Handling of Alternate Encoding",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-11T18:22:36.539Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://github.com/executablebooks/markdown-it-py/releases",
          "defaultStatus": "unaffected",
          "packageName": "markdown-it-py",
          "platforms": [
            "Linux",
            "MacOS",
            "Windows"
          ],
          "product": "markdown-it-py",
          "repo": "https://github.com/executablebooks/markdown-it-py",
          "vendor": "Executable Books",
          "versions": [
            {
              "changes": [
                {
                  "at": "commit ae03c61",
                  "status": "unaffected"
                }
              ],
              "lessThan": "v2.2.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Mark Esler"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Chris Sewell"
        }
      ],
      "datePublic": "2023-02-22T04:56:39.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Denial of service could be caused to markdown-it-py, before v2.2.0, if an attacker was allowed to force null assertions with specially crafted input.\n"
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-267",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-267"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-173",
              "description": "CWE-173",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-02-22T23:44:40.711Z",
        "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
        "shortName": "canonical"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/executablebooks/markdown-it-py/commit/ae03c6107dfa18e648f6fdd1280f5b89092d5d49"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2023-02-07T14:19:00.000-06:00",
          "value": "Reported to upstream."
        },
        {
          "lang": "en",
          "time": "2023-02-22T05:56:39+01:00",
          "value": "Patched by upstream."
        }
      ],
      "title": "markdown-it-py crash on null assertions"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
    "assignerShortName": "canonical",
    "cveId": "CVE-2023-26303",
    "datePublished": "2023-02-22T23:44:40.711Z",
    "dateReserved": "2023-02-21T22:36:47.685Z",
    "dateUpdated": "2025-03-11T18:22:36.539Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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.

Action not permitted

GHSA-VRJV-MXR7-VJF8

CVE-2023-26303 (GCVE-0-2023-26303)

Tags

Sightings

Nomenclature