cnvd - cnvd-2021-41093

cnvd-2021-41093

Vulnerability from cnvd

Title: QEMU代码问题漏洞（CNVD-2021-41093）

Description:

QEMU（Quick Emulator）是法国法布里斯-贝拉（Fabrice Bellard）软件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 6.0.0之前版本的SCSI Emulation Support存在代码问题漏洞。攻击者可利用该漏洞使主机上的QEMU进程崩溃导致拒绝服务。

Severity: 低

Patch Name: QEMU代码问题漏洞（CNVD-2021-41093）的补丁

Patch Description:

QEMU（Quick Emulator）是法国法布里斯-贝拉（Fabrice Bellard）软件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 6.0.0之前版本的SCSI Emulation Support存在代码问题漏洞。攻击者可利用该漏洞使主机上的QEMU进程崩溃导致拒绝服务。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:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://bugzilla.redhat.com/show_bug.cgi?id=1909766

Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-35504

Impacted products

Name
Qemu QEMU <6.0.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-35504",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-35504"
    }
  },
  "description": "QEMU\uff08Quick Emulator\uff09\u662f\u6cd5\u56fd\u6cd5\u5e03\u91cc\u65af-\u8d1d\u62c9\uff08Fabrice Bellard\uff09\u8f6f\u4ef6\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 6.0.0\u4e4b\u524d\u7248\u672c\u7684SCSI Emulation Support\u5b58\u5728\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u4f7f\u4e3b\u673a\u4e0a\u7684QEMU\u8fdb\u7a0b\u5d29\u6e83\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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://bugzilla.redhat.com/show_bug.cgi?id=1909766",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-41093",
  "openTime": "2021-06-11",
  "patchDescription": "QEMU\uff08Quick Emulator\uff09\u662f\u6cd5\u56fd\u6cd5\u5e03\u91cc\u65af-\u8d1d\u62c9\uff08Fabrice Bellard\uff09\u8f6f\u4ef6\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 6.0.0\u4e4b\u524d\u7248\u672c\u7684SCSI Emulation Support\u5b58\u5728\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u4f7f\u4e3b\u673a\u4e0a\u7684QEMU\u8fdb\u7a0b\u5d29\u6e83\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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-2021-41093\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Qemu QEMU \u003c6.0.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-35504",
  "serverity": "\u4f4e",
  "submitTime": "2021-05-31",
  "title": "QEMU\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2021-41093\uff09"
}

CVE-2020-35504 (GCVE-0-2020-35504)

Vulnerability from cvelistv5

Published

2021-05-28 10:20

Modified

2024-08-04 17:02

Severity ?

CWE

CWE-476

Summary

A NULL pointer dereference flaw was found in the SCSI emulation support of QEMU in versions before 6.0.0. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

References

▼	URL	Tags
	http://www.openwall.com/lists/oss-security/2021/04/16/3	mailing-list, x_refsource_MLIST
	https://bugzilla.redhat.com/show_bug.cgi?id=1909766	x_refsource_MISC
	https://www.openwall.com/lists/oss-security/2021/04/16/3	x_refsource_MISC
	https://security.netapp.com/advisory/ntap-20210713-0006/	x_refsource_CONFIRM
	https://security.gentoo.org/glsa/202208-27	vendor-advisory, x_refsource_GENTOO
	https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html	mailing-list, x_refsource_MLIST

Impacted products

	Vendor	Product	Version
	n/a	QEMU	Version: qemu 6.0.0

Show details on NVD website

JSON

To clipboard

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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.

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