cnvd-2021-39676
Vulnerability from cnvd
Title
QEMU代码问题漏洞（CNVD-2021-39676）
Description
QEMU（Quick Emulator）是法国法布里斯-贝拉（Fabrice Bellard）个人开发者的一套模拟处理器软件。该软件具有速度快、跨平台等特点。 QEMU中存在代码问题漏洞，该漏洞源于在 hcd-dwc2 usb 主机控制器仿真中 hw/usb/hcd-dwc2.c 文件中的dwc2_handle_packet处理包存在一个发现了一个被零除的问题。恶意客户可能利用这个缺陷破坏主机上的QEMU进程，从而导致拒绝服务。 目前没有详细的漏洞细节提供。
Severity
中
Patch Name
QEMU代码问题漏洞（CNVD-2021-39676）的补丁
Patch Description
QEMU（Quick Emulator）是法国法布里斯-贝拉（Fabrice Bellard）个人开发者的一套模拟处理器软件。该软件具有速度快、跨平台等特点。 QEMU中存在代码问题漏洞，该漏洞源于在 hcd-dwc2 usb 主机控制器仿真中 hw/usb/hcd-dwc2.c 文件中的dwc2_handle_packet处理包存在一个发现了一个被零除的问题。恶意客户可能利用这个缺陷破坏主机上的QEMU进程，从而导致拒绝服务。 目前没有详细的漏洞细节提供。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。
Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg04263.html

Reference
https://nvd.nist.gov/vuln/detail/CVE-2020-27661
Impacted products
Name
Qemu QEMU
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-27661",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-27661"
    }
  },
  "description": "QEMU\uff08Quick Emulator\uff09\u662f\u6cd5\u56fd\u6cd5\u5e03\u91cc\u65af-\u8d1d\u62c9\uff08Fabrice Bellard\uff09\u4e2a\u4eba\u5f00\u53d1\u8005\u7684\u4e00\u5957\u6a21\u62df\u5904\u7406\u5668\u8f6f\u4ef6\u3002\u8be5\u8f6f\u4ef6\u5177\u6709\u901f\u5ea6\u5feb\u3001\u8de8\u5e73\u53f0\u7b49\u7279\u70b9\u3002\n\nQEMU\u4e2d\u5b58\u5728\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728 hcd-dwc2 usb \u4e3b\u673a\u63a7\u5236\u5668\u4eff\u771f\u4e2d hw/usb/hcd-dwc2.c \u6587\u4ef6\u4e2d\u7684dwc2_handle_packet\u5904\u7406\u5305\u5b58\u5728\u4e00\u4e2a\u53d1\u73b0\u4e86\u4e00\u4e2a\u88ab\u96f6\u9664\u7684\u95ee\u9898\u3002\u6076\u610f\u5ba2\u6237\u53ef\u80fd\u5229\u7528\u8fd9\u4e2a\u7f3a\u9677\u7834\u574f\u4e3b\u673a\u4e0a\u7684QEMU\u8fdb\u7a0b\uff0c\u4ece\u800c\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002 \u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg04263.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-39676",
  "openTime": "2021-06-04",
  "patchDescription": "QEMU\uff08Quick Emulator\uff09\u662f\u6cd5\u56fd\u6cd5\u5e03\u91cc\u65af-\u8d1d\u62c9\uff08Fabrice Bellard\uff09\u4e2a\u4eba\u5f00\u53d1\u8005\u7684\u4e00\u5957\u6a21\u62df\u5904\u7406\u5668\u8f6f\u4ef6\u3002\u8be5\u8f6f\u4ef6\u5177\u6709\u901f\u5ea6\u5feb\u3001\u8de8\u5e73\u53f0\u7b49\u7279\u70b9\u3002\r\n\r\nQEMU\u4e2d\u5b58\u5728\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728 hcd-dwc2 usb \u4e3b\u673a\u63a7\u5236\u5668\u4eff\u771f\u4e2d hw/usb/hcd-dwc2.c \u6587\u4ef6\u4e2d\u7684dwc2_handle_packet\u5904\u7406\u5305\u5b58\u5728\u4e00\u4e2a\u53d1\u73b0\u4e86\u4e00\u4e2a\u88ab\u96f6\u9664\u7684\u95ee\u9898\u3002\u6076\u610f\u5ba2\u6237\u53ef\u80fd\u5229\u7528\u8fd9\u4e2a\u7f3a\u9677\u7834\u574f\u4e3b\u673a\u4e0a\u7684QEMU\u8fdb\u7a0b\uff0c\u4ece\u800c\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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": "QEMU\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2021-39676\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Qemu QEMU"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-27661",
  "serverity": "\u4e2d",
  "submitTime": "2021-06-03",
  "title": "QEMU\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2021-39676\uff09"
}


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