cnvd - cnvd-2021-46874

cnvd-2021-46874

Vulnerability from cnvd

Title: Red Hat libvirt拒绝服务漏洞（CNVD-2021-46874）

Description:

Red Hat libvirt是美国红帽（Red Hat）公司的一个用于实现Linux虚拟化功能的Linux API，它支持各种Hypervisor，包括Xen和KVM，以及QEMU和用于其他操作系统的一些虚拟产品。

Red Hat libvirt 7.0.0之前版本的virConnectListAllNodeDevices API存在拒绝服务漏洞。攻击者利用该漏洞可通过执行“nodedev-list”virsh命令使libvirt daemon进程崩溃。

Severity: 中

Patch Name: Red Hat libvirt拒绝服务漏洞（CNVD-2021-46874）的补丁

Patch Description:

Red Hat libvirt 7.0.0之前版本的virConnectListAllNodeDevices API存在拒绝服务漏洞。攻击者利用该漏洞可通过执行“nodedev-list”virsh命令使libvirt daemon进程崩溃。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:

目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载： https://bugzilla.redhat.com/show_bug.cgi?id=1962306

Reference: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3559

Impacted products

Name
Red Hat libvirt >=6.10.0，<7.0.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-3559",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-3559"
    }
  },
  "description": "Red Hat libvirt\u662f\u7f8e\u56fd\u7ea2\u5e3d\uff08Red Hat\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u7528\u4e8e\u5b9e\u73b0Linux\u865a\u62df\u5316\u529f\u80fd\u7684Linux API\uff0c\u5b83\u652f\u6301\u5404\u79cdHypervisor\uff0c\u5305\u62ecXen\u548cKVM\uff0c\u4ee5\u53caQEMU\u548c\u7528\u4e8e\u5176\u4ed6\u64cd\u4f5c\u7cfb\u7edf\u7684\u4e00\u4e9b\u865a\u62df\u4ea7\u54c1\u3002\n\nRed Hat libvirt 7.0.0\u4e4b\u524d\u7248\u672c\u7684virConnectListAllNodeDevices API\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u901a\u8fc7\u6267\u884c\u201cnodedev-list\u201dvirsh\u547d\u4ee4\u4f7flibvirt daemon\u8fdb\u7a0b\u5d29\u6e83\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u8fd9\u4e2a\u5b89\u5168\u95ee\u9898\uff0c\u8bf7\u5230\u5382\u5546\u7684\u4e3b\u9875\u4e0b\u8f7d\uff1a\r\nhttps://bugzilla.redhat.com/show_bug.cgi?id=1962306",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-46874",
  "openTime": "2021-07-03",
  "patchDescription": "Red Hat libvirt\u662f\u7f8e\u56fd\u7ea2\u5e3d\uff08Red Hat\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u7528\u4e8e\u5b9e\u73b0Linux\u865a\u62df\u5316\u529f\u80fd\u7684Linux API\uff0c\u5b83\u652f\u6301\u5404\u79cdHypervisor\uff0c\u5305\u62ecXen\u548cKVM\uff0c\u4ee5\u53caQEMU\u548c\u7528\u4e8e\u5176\u4ed6\u64cd\u4f5c\u7cfb\u7edf\u7684\u4e00\u4e9b\u865a\u62df\u4ea7\u54c1\u3002\r\n\r\nRed Hat libvirt 7.0.0\u4e4b\u524d\u7248\u672c\u7684virConnectListAllNodeDevices API\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u901a\u8fc7\u6267\u884c\u201cnodedev-list\u201dvirsh\u547d\u4ee4\u4f7flibvirt daemon\u8fdb\u7a0b\u5d29\u6e83\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": "Red Hat libvirt\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-46874\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Red Hat libvirt \u003e=6.10.0\uff0c\u003c7.0.0"
  },
  "referenceLink": "http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3559",
  "serverity": "\u4e2d",
  "submitTime": "2021-07-01",
  "title": "Red Hat libvirt\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-46874\uff09"
}

CVE-2021-3559 (GCVE-0-2021-3559)

Vulnerability from cvelistv5

Published

2021-05-24 11:55

Modified

2024-08-03 17:01

Severity ?

CWE

CWE-119

Summary

A flaw was found in libvirt in the virConnectListAllNodeDevices API in versions before 7.0.0. It only affects hosts with a PCI device and driver that supports mediated devices (e.g., GRID driver). This flaw could be used by an unprivileged client with a read-only connection to crash the libvirt daemon by executing the 'nodedev-list' virsh command. The highest threat from this vulnerability is to system availability.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1962306	x_refsource_MISC
	https://security.netapp.com/advisory/ntap-20210706-0006/	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	libvirt	Version: libvirt 7.0.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:01:07.894Z",
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    ],
    "cna": {
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        }
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      "problemTypes": [
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        },
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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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