Vulnerability-Lookup

CNVD-2022-25987

Vulnerability from cnvd - Published: 2022-04-02

Title

Wasmtime资源管理错误漏洞

Description

Wasmtime是一个字节码联盟项目，它是一个独立的仅用于WebAssembly和WASI的wasm优化运行时。 Wasmtime存在资源管理错误漏洞，该漏洞源于当运行使用externrefs的Wasm并在 Wasmtime中启用epoch中断时，Wasmtime中有一个use after free漏洞。目前没有详细的漏洞细节提供。

Severity

高

Patch Name

Wasmtime资源管理错误漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-gwc9-348x-qwv2

Reference

https://nvd.nist.gov/vuln/detail/CVE-2022-24791

Impacted products

Name
['Wasmtime Wasmtime 0.34.0', 'Wasmtime Wasmtime 0.34.1', 'Wasmtime Wasmtime 0.35.0', 'Wasmtime Wasmtime 0.35.1']

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2022-24791"
    }
  },
  "description": "Wasmtime\u662f\u4e00\u4e2a\u5b57\u8282\u7801\u8054\u76df\u9879\u76ee\uff0c\u5b83\u662f\u4e00\u4e2a\u72ec\u7acb\u7684\u4ec5\u7528\u4e8eWebAssembly\u548cWASI\u7684wasm\u4f18\u5316\u8fd0\u884c\u65f6\u3002\n\nWasmtime\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5f53\u8fd0\u884c\u4f7f\u7528externrefs\u7684Wasm\u5e76\u5728 Wasmtime\u4e2d\u542f\u7528epoch\u4e2d\u65ad\u65f6\uff0cWasmtime\u4e2d\u6709\u4e00\u4e2ause after free\u6f0f\u6d1e\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-gwc9-348x-qwv2",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-25987",
  "openTime": "2022-04-02",
  "patchDescription": "Wasmtime\u662f\u4e00\u4e2a\u5b57\u8282\u7801\u8054\u76df\u9879\u76ee\uff0c\u5b83\u662f\u4e00\u4e2a\u72ec\u7acb\u7684\u4ec5\u7528\u4e8eWebAssembly\u548cWASI\u7684wasm\u4f18\u5316\u8fd0\u884c\u65f6\u3002\r\n\r\nWasmtime\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5f53\u8fd0\u884c\u4f7f\u7528externrefs\u7684Wasm\u5e76\u5728 Wasmtime\u4e2d\u542f\u7528epoch\u4e2d\u65ad\u65f6\uff0cWasmtime\u4e2d\u6709\u4e00\u4e2ause after free\u6f0f\u6d1e\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Wasmtime\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Wasmtime Wasmtime 0.34.0",
      "Wasmtime Wasmtime 0.34.1",
      "Wasmtime Wasmtime 0.35.0",
      "Wasmtime Wasmtime 0.35.1"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2022-24791",
  "serverity": "\u9ad8",
  "submitTime": "2022-04-02",
  "title": "Wasmtime\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2022-24791 (GCVE-0-2022-24791)

Vulnerability from cvelistv5 – Published: 2022-03-31 23:00 – Updated: 2025-04-23 18:42

Title

Use after free in Wasmtime

Summary

Wasmtime is a standalone JIT-style runtime for WebAssembly, using Cranelift. There is a use after free vulnerability in Wasmtime when both running Wasm that uses externrefs and enabling epoch interruption in Wasmtime. If you are not explicitly enabling epoch interruption (it is disabled by default) then you are not affected. If you are explicitly disabling the Wasm reference types proposal (it is enabled by default) then you are also not affected. The use after free is caused by Cranelift failing to emit stack maps when there are safepoints inside cold blocks. Cold blocks occur when epoch interruption is enabled. Cold blocks are emitted at the end of compiled functions, and change the order blocks are emitted versus defined. This reordering accidentally caused Cranelift to skip emitting some stack maps because it expected to emit the stack maps in block definition order, rather than block emission order. When Wasmtime would eventually collect garbage, it would fail to find live references on the stack because of the missing stack maps, think that they were unreferenced garbage, and therefore reclaim them. Then after the collection ended, the Wasm code could use the reclaimed-too-early references, which is a use after free. Patches have been released in versions 0.34.2 and 0.35.2, which fix the vulnerability. All Wasmtime users are recommended to upgrade to these patched versions. If upgrading is not an option for you at this time, you can avoid the vulnerability by either: disabling the Wasm reference types proposal, config.wasm_reference_types(false); or by disabling epoch interruption if you were previously enabling it. config.epoch_interruption(false).

Severity ?

8.1 (High)


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

CWE

CWE-416 - Use After Free

Assigner

GitHub_M

References

URL

Tags

	https://github.com/bytecodealliance/wasmtime/secu…	x_refsource_CONFIRM
	https://github.com/bytecodealliance/wasmtime/comm…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	bytecodealliance	wasmtime	Affected: < 0.34.2 Affected: >= 0.35.0, < 0.35.2

Show details on NVD website

JSON

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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

CNVD-2022-25987

CVE-2022-24791 (GCVE-0-2022-24791)

Tags

Sightings

Nomenclature