pysec - pysec-2023-236

PYSEC-2023-236

Vulnerability from pysec - Published: 2023-11-13 03:15 - Updated: 2023-11-16 20:25

Details

Remarshal prior to v0.17.1 expands YAML alias nodes unlimitedly, hence Remarshal is vulnerable to Billion Laughs Attack. Processing untrusted YAML files may cause a denial-of-service (DoS) condition.

Severity ?

7.5 (High)


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

Impacted products

Name	purl
remarshal	pkg:pypi/remarshal

Aliases

CVE-2023-47163

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "remarshal",
        "purl": "pkg:pypi/remarshal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "fd6ac799a02f533c3fc243b49cdd6d21aa7ee494"
            }
          ],
          "repo": "https://github.com/remarshal-project/remarshal",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.17.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.10.0",
        "0.11.0",
        "0.11.1",
        "0.11.2",
        "0.12.0",
        "0.14.0",
        "0.15.0",
        "0.15.1",
        "0.16.0",
        "0.16.1",
        "0.17.0",
        "0.8.0",
        "0.9.0",
        "0.9.1",
        "0.9.2"
      ]
    }
  ],
  "aliases": [
    "CVE-2023-47163"
  ],
  "details": "Remarshal prior to v0.17.1 expands YAML alias nodes unlimitedly, hence Remarshal is vulnerable to Billion Laughs Attack. Processing untrusted YAML files may cause a denial-of-service (DoS) condition.",
  "id": "PYSEC-2023-236",
  "modified": "2023-11-16T20:25:23.801345+00:00",
  "published": "2023-11-13T03:15:00+00:00",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/remarshal-project/remarshal/releases/tag/v0.17.1"
    },
    {
      "type": "FIX",
      "url": "https://github.com/remarshal-project/remarshal/commit/fd6ac799a02f533c3fc243b49cdd6d21aa7ee494"
    },
    {
      "type": "WEB",
      "url": "https://jvn.jp/en/jp/JVN86156389/"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2023-47163 (GCVE-0-2023-47163)

Vulnerability from cvelistv5 – Published: 2023-11-13 02:26 – Updated: 2025-01-08 21:35

Summary

Remarshal prior to v0.17.1 expands YAML alias nodes unlimitedly, hence Remarshal is vulnerable to Billion Laughs Attack. Processing untrusted YAML files may cause a denial-of-service (DoS) condition.

Severity ?

No CVSS data available.

CWE

Uncontrolled Recursion

Assigner

jpcert

References

URL

Tags

	https://github.com/remarshal-project/remarshal/re…
	https://github.com/remarshal-project/remarshal/co…
	https://jvn.jp/en/jp/JVN86156389/

Impacted products

	Vendor	Product	Version
	Remarshal-project	Remarshal	Affected: prior to v0.17.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T21:01:22.828Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/remarshal-project/remarshal/releases/tag/v0.17.1"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/remarshal-project/remarshal/commit/fd6ac799a02f533c3fc243b49cdd6d21aa7ee494"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://jvn.jp/en/jp/JVN86156389/"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-47163",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-01-08T21:34:46.749029Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-01-08T21:35:11.153Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Remarshal",
          "vendor": "Remarshal-project",
          "versions": [
            {
              "status": "affected",
              "version": "prior to v0.17.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Remarshal prior to v0.17.1 expands YAML alias nodes unlimitedly, hence Remarshal is vulnerable to Billion Laughs Attack. Processing untrusted YAML files may cause a denial-of-service (DoS) condition."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Uncontrolled Recursion",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-11-13T02:26:42.658Z",
        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "url": "https://github.com/remarshal-project/remarshal/releases/tag/v0.17.1"
        },
        {
          "url": "https://github.com/remarshal-project/remarshal/commit/fd6ac799a02f533c3fc243b49cdd6d21aa7ee494"
        },
        {
          "url": "https://jvn.jp/en/jp/JVN86156389/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
    "assignerShortName": "jpcert",
    "cveId": "CVE-2023-47163",
    "datePublished": "2023-11-13T02:26:42.658Z",
    "dateReserved": "2023-10-31T00:29:57.924Z",
    "dateUpdated": "2025-01-08T21:35:11.153Z",
    "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

PYSEC-2023-236

CVE-2023-47163 (GCVE-0-2023-47163)

Tags

Sightings

Nomenclature