目标达成 感谢每一位支持者 — 我们达成了 100% 目标！

目标: 1000 元 · 已筹: 1359 元

100%
请我们喝杯咖啡

CVE-2022-24791— Wasmtime 资源管理错误漏洞

一分钟漏洞结论

影响对象
bytecodealliance wasmtime
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

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。以下产品和版本受到影响：0.34.0、0.34.1、0.35.0 和 0.35.1。

CVSS 8.1 · High EPSS 1.18% · P67
获取后续新漏洞提醒 登录后订阅

一、 漏洞 CVE-2022-24791 基础信息

漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
查看神龙十问 ↗

尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。

Vulnerability Title
Use after free in Wasmtime
来源: CVE Program / CVE List V5
Vulnerability Description
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).
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
释放后使用
来源: CVE Program / CVE List V5
Vulnerability Title
Wasmtime 资源管理错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability 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。以下产品和版本受到影响：0.34.0、0.34.1、0.35.0 和 0.35.1。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
bytecodealliance wasmtime < 0.34.2 -

二、漏洞 CVE-2022-24791 的公开POC

# POC 描述 源链接 神龙链接
AI 生成 POC 高级

未找到公开 POC。

登录以生成 AI POC

三、漏洞 CVE-2022-24791 的情报信息

请登录查看更多情报信息。

CVE-2022-24791 补丁与修复 (1)

CVE-2022-24791 厂商安全公告 (1)

IV. Related Vulnerabilities

Same product: wasmtime
Same vendor: bytecodealliance
Same weakness: CWE-416

V. Comments for CVE-2022-24791

暂无评论

发表评论