Vulnerability-Lookup

PYSEC-2024-327

Vulnerability from pysec - Published: 2024-04-04 16:15 - Updated: 2026-07-13 05:52

Details

wasmtime is a runtime for WebAssembly. The 19.0.0 release of Wasmtime contains a regression introduced during its development which can lead to a guest WebAssembly module causing a panic in the host runtime. A valid WebAssembly module, when executed at runtime, may cause this panic. This vulnerability has been patched in version 19.0.1.

Severity

5.5 (Medium)


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

Impacted products

Name	purl
wasmtime	pkg:pypi/wasmtime

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {},
      "package": {
        "ecosystem": "PyPI",
        "name": "wasmtime",
        "purl": "pkg:pypi/wasmtime"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "19.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0.1",
        "0.0.2",
        "0.11.0",
        "0.12.0",
        "0.15.0",
        "0.15.1",
        "0.16.0",
        "0.16.1",
        "0.17.0",
        "0.18.0",
        "0.18.1",
        "0.18.2",
        "0.19.0",
        "0.20.0",
        "0.21.0",
        "0.22.0",
        "0.23.0",
        "0.24.0",
        "0.25.0",
        "0.26.0",
        "0.27.0",
        "0.28.0",
        "0.28.1",
        "0.29.0",
        "0.30.0",
        "0.31.0",
        "0.32.0",
        "0.33.0",
        "0.34.0",
        "0.35.0",
        "0.36.0",
        "0.37.0",
        "0.38.0",
        "0.39.1",
        "0.40.0",
        "0.9.0",
        "1.0.0",
        "1.0.1",
        "10.0.0",
        "10.0.1",
        "11.0.0",
        "12.0.0",
        "13.0.0",
        "13.0.1",
        "13.0.2",
        "14.0.0",
        "15.0.0",
        "16.0.0",
        "17.0.0",
        "17.0.1",
        "18.0.0",
        "18.0.2",
        "19.0.0",
        "2.0.0",
        "3.0.0",
        "4.0.0",
        "5.0.0",
        "6.0.0",
        "7.0.0",
        "8.0.0",
        "8.0.1",
        "9.0.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2024-30266",
    "GHSA-75hq-h6g9-h4q5"
  ],
  "details": "wasmtime is a runtime for WebAssembly. The 19.0.0 release of Wasmtime contains a regression introduced during its development which can lead to a guest WebAssembly module causing a panic in the host runtime. A valid WebAssembly module, when executed at runtime, may cause this panic. This vulnerability has been patched in version 19.0.1.",
  "id": "PYSEC-2024-327",
  "modified": "2026-07-13T05:52:32.049957Z",
  "published": "2024-04-04T16:15:09.107Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-75hq-h6g9-h4q5"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/bytecodealliance/wasmtime/issues/8281"
    },
    {
      "type": "FIX",
      "url": "https://github.com/bytecodealliance/wasmtime/commit/7f57d0bb0948fa56cc950278d0db230ed10e8664"
    },
    {
      "type": "FIX",
      "url": "https://github.com/bytecodealliance/wasmtime/pull/8018"
    },
    {
      "type": "FIX",
      "url": "https://github.com/bytecodealliance/wasmtime/pull/8283"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-30266 (GCVE-0-2024-30266)

Vulnerability from cvelistv5 – Published: 2024-04-04 15:42 – Updated: 2024-08-02 01:32

Title

Wasmtime vulnerable to panic when using a dropped extenref-typed element segment

Summary

Severity

3.3 (Low)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-04-04 19:54 UTC

CWE

CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')

Assigner

GitHub_M mitre root

References

5 references

URL	Tags
https://github.com/bytecodealliance/wasmtime/secu…	x_refsource_CONFIRM
https://github.com/bytecodealliance/wasmtime/issu…	x_refsource_MISC
https://github.com/bytecodealliance/wasmtime/pull/8018	x_refsource_MISC
https://github.com/bytecodealliance/wasmtime/pull/8283	x_refsource_MISC
https://github.com/bytecodealliance/wasmtime/comm…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
bytecodealliance	wasmtime	Affected: = 19.0.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-30266",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-04-04T19:54:05.029928Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:38:20.190Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T01:32:07.072Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-75hq-h6g9-h4q5",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-75hq-h6g9-h4q5"
          },
          {
            "name": "https://github.com/bytecodealliance/wasmtime/issues/8281",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/bytecodealliance/wasmtime/issues/8281"
          },
          {
            "name": "https://github.com/bytecodealliance/wasmtime/pull/8018",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/bytecodealliance/wasmtime/pull/8018"
          },
          {
            "name": "https://github.com/bytecodealliance/wasmtime/pull/8283",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/bytecodealliance/wasmtime/pull/8283"
          },
          {
            "name": "https://github.com/bytecodealliance/wasmtime/commit/7f57d0bb0948fa56cc950278d0db230ed10e8664",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/bytecodealliance/wasmtime/commit/7f57d0bb0948fa56cc950278d0db230ed10e8664"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "wasmtime",
          "vendor": "bytecodealliance",
          "versions": [
            {
              "status": "affected",
              "version": "= 19.0.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "wasmtime is a runtime for WebAssembly. The 19.0.0 release of Wasmtime contains a regression introduced during its development which can lead to a guest WebAssembly module causing a panic in the host runtime. A valid WebAssembly module, when executed at runtime, may cause this panic. This vulnerability has been patched in version 19.0.1."
        }
      ],
      "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-843",
              "description": "CWE-843: Access of Resource Using Incompatible Type (\u0027Type Confusion\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-04-04T15:42:00.200Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-75hq-h6g9-h4q5",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-75hq-h6g9-h4q5"
        },
        {
          "name": "https://github.com/bytecodealliance/wasmtime/issues/8281",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/bytecodealliance/wasmtime/issues/8281"
        },
        {
          "name": "https://github.com/bytecodealliance/wasmtime/pull/8018",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/bytecodealliance/wasmtime/pull/8018"
        },
        {
          "name": "https://github.com/bytecodealliance/wasmtime/pull/8283",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/bytecodealliance/wasmtime/pull/8283"
        },
        {
          "name": "https://github.com/bytecodealliance/wasmtime/commit/7f57d0bb0948fa56cc950278d0db230ed10e8664",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/bytecodealliance/wasmtime/commit/7f57d0bb0948fa56cc950278d0db230ed10e8664"
        }
      ],
      "source": {
        "advisory": "GHSA-75hq-h6g9-h4q5",
        "discovery": "UNKNOWN"
      },
      "title": "Wasmtime vulnerable to panic when using a dropped extenref-typed element segment"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-30266",
    "datePublished": "2024-04-04T15:42:00.200Z",
    "dateReserved": "2024-03-26T12:52:00.935Z",
    "dateUpdated": "2024-08-02T01:32:07.072Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

GHSA-75HQ-H6G9-H4Q5

Vulnerability from github – Published: 2024-04-02 21:09 – Updated: 2025-05-02 12:54

Summary

Wasmtime vulnerable to panic when using a dropped extenref-typed element segment

Details

Impact

The 19.0.0 release of Wasmtime contains a regression introduced during its development which can lead to a guest WebAssembly module causing a panic in the host runtime. A valid WebAssembly module, when executed at runtime, may cause this panic. The panic in question is caused when a WebAssembly module issues a table.* instruction which uses a dropped element segment with a table that also has an externref type. This causes Wasmtime to erroneously use an empty function segment instead of an empty externref segment to perform this operation. This mismatch in types causes a panic in Wasmtime when it's asserted that an externref table is only viewed as externrefs.

This regression was introduced during the development of the 19.0.0 release and only affects the 19.0.0 release. This panic requires the reference-types WebAssembly feature to be enabled, and it is enabled by default. Toolchains are not known to generate this pattern by default so it's likely a module would need to be specifically crafted to trigger this panic.

A panic in a host runtime represents a possible denial-of-service in some scenarios. This panic cannot introduce memory unsafety or allow WebAssembly to break outside of its sandbox, however. There is no possible heap corruption or memory unsafety from this panic.

Patches

Wasmtime 19.0.1 has been released to fix this problem. Users of 19.0.0 should upgrade to 19.0.1. All other versions of Wasmtime are not affected by this issue.

Workarounds

If upgrading is not possible it's recommended to use config.reference_types(false). That will disable these modules at validation-time which prevents the possibility of a panic at runtime. If reference-types are required, however, then there is no other workaround at this time other than upgrading.

References

Severity

3.3 (Low)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "wasmtime"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "19.0.0"
            },
            {
              "fixed": "19.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "19.0.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2024-30266"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-843"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-04-02T21:09:23Z",
    "nvd_published_at": "2024-04-04T16:15:09Z",
    "severity": "LOW"
  },
  "details": "### Impact\n\nThe 19.0.0 release of Wasmtime contains a regression introduced during its development which can lead to a guest WebAssembly module causing a panic in the host runtime. A valid WebAssembly module, when executed at runtime, may cause this panic. The panic in question is caused when a WebAssembly module issues a `table.*` instruction which uses a dropped element segment with a table that also has an `externref` type. This causes Wasmtime to erroneously use an empty function segment instead of an empty externref segment to perform this operation. This mismatch in types causes a panic in Wasmtime when it\u0027s asserted that an externref table is only viewed as externrefs.\n\nThis regression was introduced during the development of the 19.0.0 release and only affects the 19.0.0 release. This panic requires the `reference-types` WebAssembly feature to be enabled, and it is enabled by default. Toolchains are not known to generate this pattern by default so it\u0027s likely a module would need to be specifically crafted to trigger this panic.\n\nA panic in a host runtime represents a possible denial-of-service in some scenarios. This panic cannot introduce memory unsafety or allow WebAssembly to break outside of its sandbox, however. There is no possible heap corruption or memory unsafety from this panic.\n\n### Patches\n\nWasmtime 19.0.1 has been released to fix this problem. Users of 19.0.0 should upgrade to 19.0.1. All other versions of Wasmtime are not affected by this issue.\n\n### Workarounds\n\nIf upgrading is not possible it\u0027s recommended to use `config.reference_types(false)`. That will disable these modules at validation-time which prevents the possibility of a panic at runtime. If reference-types are required, however, then there is no other workaround at this time other than upgrading.\n\n### References\n\n* [Original bug report](https://github.com/bytecodealliance/wasmtime/issues/8281)\n* [PR to fix the bug](https://github.com/bytecodealliance/wasmtime/pull/8283)\n* [PR that introduced the bug](https://github.com/bytecodealliance/wasmtime/pull/8018)",
  "id": "GHSA-75hq-h6g9-h4q5",
  "modified": "2025-05-02T12:54:52Z",
  "published": "2024-04-02T21:09:23Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-75hq-h6g9-h4q5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-30266"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bytecodealliance/wasmtime/issues/8281"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bytecodealliance/wasmtime/pull/8018"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bytecodealliance/wasmtime/pull/8283"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bytecodealliance/wasmtime/commit/7f57d0bb0948fa56cc950278d0db230ed10e8664"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/bytecodealliance/wasmtime"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2024-0441.html"
    }
  ],
  "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:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Wasmtime vulnerable to panic when using a dropped extenref-typed element segment"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

PYSEC-2024-327

CVE-2024-30266 (GCVE-0-2024-30266)

GHSA-75HQ-H6G9-H4Q5

Impact

Patches

Workarounds

References

Tags

Sightings

Nomenclature

Related by attack behaviour