gsd-2022-31146
Vulnerability from gsd
Modified
2023-12-13 01:19
Details
Wasmtime is a standalone runtime for WebAssembly. There is a bug in the Wasmtime's code generator, Cranelift, where functions using reference types may be incorrectly missing metadata required for runtime garbage collection. This means that if a GC happens at runtime then the GC pass will mistakenly think these functions do not have live references to GC'd values, reclaiming them and deallocating them. The function will then subsequently continue to use the values assuming they had not been GC'd, leading later to a use-after-free. This bug was introduced in the migration to the `regalloc2` register allocator that occurred in the Wasmtime 0.37.0 release on 2022-05-20. This bug has been patched and users should upgrade to Wasmtime version 0.38.2. Mitigations for this issue can be achieved by disabling the reference types proposal by passing `false` to `wasmtime::Config::wasm_reference_types` or downgrading to Wasmtime 0.36.0 or prior.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2022-31146",
"description": "There is a bug in the Wasmtime\u0027s code generator, Cranelift, where functions using reference types may be incorrectly missing metadata required for runtime garbage collection. This means that if a GC happens at runtime then the GC pass will mistakenly think these functions do not have live references to GC\u0027d values, reclaiming them and deallocating them. The function will then subsequently continue to use the values assuming they had not been GC\u0027d, leading later to a use-after-free. This bug was introduced in the migration to the `regalloc2` register allocator that occurred in the Wasmtime 0.37.0 release on 2022-05-20. This bug has been patched and users should upgrade to Wasmtime version 0.38.2. Mitigations for this issue can be achieved by doing one of: * Disabling the reference types proposal by passing `false` to [`wasmtime::Config::wasm_reference_types`](https://docs.rs/wasmtime/0.38.0/wasmtime/struct.Config.html#method.wasm_reference_types). * Downgrading to Wasmtime 0.36.0 or prior.",
"id": "GSD-2022-31146"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2022-31146"
],
"details": "Wasmtime is a standalone runtime for WebAssembly. There is a bug in the Wasmtime\u0027s code generator, Cranelift, where functions using reference types may be incorrectly missing metadata required for runtime garbage collection. This means that if a GC happens at runtime then the GC pass will mistakenly think these functions do not have live references to GC\u0027d values, reclaiming them and deallocating them. The function will then subsequently continue to use the values assuming they had not been GC\u0027d, leading later to a use-after-free. This bug was introduced in the migration to the `regalloc2` register allocator that occurred in the Wasmtime 0.37.0 release on 2022-05-20. This bug has been patched and users should upgrade to Wasmtime version 0.38.2. Mitigations for this issue can be achieved by disabling the reference types proposal by passing `false` to `wasmtime::Config::wasm_reference_types` or downgrading to Wasmtime 0.36.0 or prior.",
"id": "GSD-2022-31146",
"modified": "2023-12-13T01:19:18.011014Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
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"ASSIGNER": "security-advisories@github.com",
"ID": "CVE-2022-31146",
"STATE": "PUBLIC",
"TITLE": "Use After Free in Wasmtime"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "wasmtime",
"version": {
"version_data": [
{
"platform": "",
"version_affected": "",
"version_name": "",
"version_value": "\u003e= 0.37.0, \u003c 0.38.2"
},
{
"platform": "",
"version_affected": "",
"version_name": "",
"version_value": "\u003e= 0.84.0, \u003c 0.85.2"
}
]
}
}
]
},
"vendor_name": "bytecodealliance"
}
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"data_format": "MITRE",
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"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Wasmtime is a standalone runtime for WebAssembly. There is a bug in the Wasmtime\u0027s code generator, Cranelift, where functions using reference types may be incorrectly missing metadata required for runtime garbage collection. This means that if a GC happens at runtime then the GC pass will mistakenly think these functions do not have live references to GC\u0027d values, reclaiming them and deallocating them. The function will then subsequently continue to use the values assuming they had not been GC\u0027d, leading later to a use-after-free. This bug was introduced in the migration to the `regalloc2` register allocator that occurred in the Wasmtime 0.37.0 release on 2022-05-20. This bug has been patched and users should upgrade to Wasmtime version 0.38.2. Mitigations for this issue can be achieved by disabling the reference types proposal by passing `false` to `wasmtime::Config::wasm_reference_types` or downgrading to Wasmtime 0.36.0 or prior."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-416: Use After Free"
}
]
}
]
},
"references": {
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{
"name": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-5fhj-g3p3-pq9g",
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},
{
"name": "https://github.com/WebAssembly/reference-types",
"refsource": "MISC",
"url": "https://github.com/WebAssembly/reference-types"
},
{
"name": "https://github.com/bytecodealliance/wasmtime/",
"refsource": "MISC",
"url": "https://github.com/bytecodealliance/wasmtime/"
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"source": {
"advisory": "GHSA-5fhj-g3p3-pq9g",
"discovery": "UNKNOWN"
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"gitlab.com": {
"advisories": [
{
"affected_range": "\u003e=0.37.0 \u003c0.38.2",
"affected_versions": "All versions starting from 0.37.0 before 0.38.2",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"cwe_ids": [
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"CWE-416",
"CWE-937"
],
"date": "2022-07-27",
"description": "Wasmtime is a standalone runtime for WebAssembly. There is a bug in the Wasmtime\u0027s code generator, Cranelift, where functions using reference types may be incorrectly missing metadata required for runtime garbage collection. This means that if a GC happens at runtime then the GC pass will mistakenly think these functions do not have live references to GC\u0027d values, reclaiming them and deallocating them. The function will then subsequently continue to use the values assuming they had not been GC\u0027d, leading later to a use-after-free. This bug was introduced in the migration to the `regalloc2` register allocator that occurred in the Wasmtime 0.37.0 release on 2022-05-20. This bug has been patched and users should upgrade to Wasmtime version 0.38.2. Mitigations for this issue can be achieved by disabling the reference types proposal by passing `false` to `wasmtime::Config::wasm_reference_types` or downgrading to Wasmtime 0.36.0 or prior.",
"fixed_versions": [
"0.39.1"
],
"identifier": "CVE-2022-31146",
"identifiers": [
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"GHSA-5fhj-g3p3-pq9g"
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"not_impacted": "All versions before 0.37.0, all versions starting from 0.38.2",
"package_slug": "conan/wasmtime",
"pubdate": "2022-07-21",
"solution": "Upgrade to version 0.39.1 or above.",
"title": "Use After Free",
"urls": [
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"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-5fhj-g3p3-pq9g",
"https://github.com/WebAssembly/reference-types",
"https://github.com/bytecodealliance/wasmtime/"
],
"uuid": "153f1168-562f-4b63-82c7-ccf2cb024381"
},
{
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"affected_versions": "All versions starting from 0.37.0 before 0.38.2",
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"CWE-937"
],
"date": "2022-07-27",
"description": "Wasmtime is a standalone runtime for WebAssembly. There is a bug in the Wasmtime\u0027s code generator, Cranelift, where functions using reference types may be incorrectly missing metadata required for runtime garbage collection. This means that if a GC happens at runtime then the GC pass will mistakenly think these functions do not have live references to GC\u0027d values, reclaiming them and deallocating them. The function will then subsequently continue to use the values assuming they had not been GC\u0027d, leading later to a use-after-free. This bug was introduced in the migration to the `regalloc2` register allocator that occurred in the Wasmtime 0.37.0 release on 2022-05-20. This bug has been patched and users should upgrade to Wasmtime version 0.38.2. Mitigations for this issue can be achieved by disabling the reference types proposal by passing `false` to `wasmtime::Config::wasm_reference_types` or downgrading to Wasmtime 0.36.0 or prior.",
"fixed_versions": [
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],
"identifier": "CVE-2022-31146",
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"package_slug": "go/github.com/bytecodealliance/wasmtime-go",
"pubdate": "2022-07-21",
"solution": "Upgrade to version 0.38.2 or above.",
"title": "Use After Free",
"urls": [
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"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-5fhj-g3p3-pq9g",
"https://github.com/WebAssembly/reference-types",
"https://github.com/bytecodealliance/wasmtime/"
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"uuid": "9c689783-6103-4a97-99f1-9360eeb8b3c6"
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{
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],
"date": "2022-07-27",
"description": "Wasmtime is a standalone runtime for WebAssembly. There is a bug in the Wasmtime\u0027s code generator, Cranelift, where functions using reference types may be incorrectly missing metadata required for runtime garbage collection. This means that if a GC happens at runtime then the GC pass will mistakenly think these functions do not have live references to GC\u0027d values, reclaiming them and deallocating them. The function will then subsequently continue to use the values assuming they had not been GC\u0027d, leading later to a use-after-free. This bug was introduced in the migration to the `regalloc2` register allocator that occurred in the Wasmtime 0.37.0 release on 2022-05-20. This bug has been patched and users should upgrade to Wasmtime version 0.38.2. Mitigations for this issue can be achieved by disabling the reference types proposal by passing `false` to `wasmtime::Config::wasm_reference_types` or downgrading to Wasmtime 0.36.0 or prior.",
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],
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"package_slug": "nuget/Wasmtime",
"pubdate": "2022-07-21",
"solution": "Unfortunately, there is no solution available yet.",
"title": "Use After Free",
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"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-5fhj-g3p3-pq9g",
"https://github.com/WebAssembly/reference-types",
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],
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"description": "Wasmtime is a standalone runtime for WebAssembly. There is a bug in the Wasmtime\u0027s code generator, Cranelift, where functions using reference types may be incorrectly missing metadata required for runtime garbage collection. This means that if a GC happens at runtime then the GC pass will mistakenly think these functions do not have live references to GC\u0027d values, reclaiming them and deallocating them. The function will then subsequently continue to use the values assuming they had not been GC\u0027d, leading later to a use-after-free. This bug was introduced in the migration to the `regalloc2` register allocator that occurred in the Wasmtime 0.37.0 release on 2022-05-20. This bug has been patched and users should upgrade to Wasmtime version 0.38.2. Mitigations for this issue can be achieved by disabling the reference types proposal by passing `false` to `wasmtime::Config::wasm_reference_types` or downgrading to Wasmtime 0.36.0 or prior.",
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"package_slug": "pypi/wasmtime",
"pubdate": "2022-07-21",
"solution": "Upgrade to version 0.39.1 or above.",
"title": "Use After Free",
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"impact": {
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"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
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"impactScore": 5.9
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},
"lastModifiedDate": "2022-07-27T22:42Z",
"publishedDate": "2022-07-21T04:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.