cnvd - cnvd-2021-45768

cnvd-2021-45768

Vulnerability from cnvd

Title: QEMU无效指针初始化漏洞（CNVD-2021-45768）

Description:

QEMU是一套模拟处理器软件。

QEMU存在安全漏洞，该漏洞源于函数udp6_input()处理来自来宾的小于udphdr结构大小的udp数据包时，使用工作mbuf缓冲区外部的内存。攻击者可利用漏洞导致越界读取访问或间接内存泄露。

Severity: 低

Patch Name: QEMU无效指针初始化漏洞（CNVD-2021-45768）的补丁

Patch Description:

QEMU是一套模拟处理器软件。

QEMU存在安全漏洞，该漏洞源于函数udp6_input()处理来自来宾的小于udphdr结构大小的udp数据包时，使用工作mbuf缓冲区外部的内存。攻击者可利用漏洞导致越界读取访问或间接内存泄露。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://bugzilla.redhat.com/show_bug.cgi?id=1970487

Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-3593

Impacted products

Name
Qemu QEMU

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-3593",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-3593"
    }
  },
  "description": "QEMU\u662f\u4e00\u5957\u6a21\u62df\u5904\u7406\u5668\u8f6f\u4ef6\u3002\n\nQEMU\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u51fd\u6570udp6_input()\u5904\u7406\u6765\u81ea\u6765\u5bbe\u7684\u5c0f\u4e8eudphdr\u7ed3\u6784\u5927\u5c0f\u7684udp\u6570\u636e\u5305\u65f6\uff0c\u4f7f\u7528\u5de5\u4f5cmbuf\u7f13\u51b2\u533a\u5916\u90e8\u7684\u5185\u5b58\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u5bfc\u81f4\u8d8a\u754c\u8bfb\u53d6\u8bbf\u95ee\u6216\u95f4\u63a5\u5185\u5b58\u6cc4\u9732\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://bugzilla.redhat.com/show_bug.cgi?id=1970487",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-45768",
  "openTime": "2021-06-29",
  "patchDescription": "QEMU\u662f\u4e00\u5957\u6a21\u62df\u5904\u7406\u5668\u8f6f\u4ef6\u3002\r\n\r\nQEMU\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u51fd\u6570udp6_input()\u5904\u7406\u6765\u81ea\u6765\u5bbe\u7684\u5c0f\u4e8eudphdr\u7ed3\u6784\u5927\u5c0f\u7684udp\u6570\u636e\u5305\u65f6\uff0c\u4f7f\u7528\u5de5\u4f5cmbuf\u7f13\u51b2\u533a\u5916\u90e8\u7684\u5185\u5b58\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u5bfc\u81f4\u8d8a\u754c\u8bfb\u53d6\u8bbf\u95ee\u6216\u95f4\u63a5\u5185\u5b58\u6cc4\u9732\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\u65e0\u6548\u6307\u9488\u521d\u59cb\u5316\u6f0f\u6d1e\uff08CNVD-2021-45768\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Qemu QEMU"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-3593",
  "serverity": "\u4f4e",
  "submitTime": "2021-06-16",
  "title": "QEMU\u65e0\u6548\u6307\u9488\u521d\u59cb\u5316\u6f0f\u6d1e\uff08CNVD-2021-45768\uff09"
}

CVE-2021-3593 (GCVE-0-2021-3593)

Vulnerability from cvelistv5

Published

2021-06-15 00:00

Modified

2024-08-03 17:01

Severity ?

CWE

CWE-824

Summary

An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the udp6_input() function and could occur while processing a udp packet that is smaller than the size of the 'udphdr' structure. This issue may lead to out-of-bounds read access or indirect host memory disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1970487
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GCKWZWY64EHTOQMLVLTSZ4AA27EWRJMH/	vendor-advisory
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGPQZFVJCFGDSISFXPCQTTBBD7QZLJKI/	vendor-advisory
	https://security.gentoo.org/glsa/202107-44	vendor-advisory
	https://security.netapp.com/advisory/ntap-20210805-0004/
	https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html	mailing-list
	https://lists.debian.org/debian-lts-announce/2023/03/msg00013.html	mailing-list

Impacted products

	Vendor	Product	Version
	n/a	QEMU	Version: libslirp 4.6.0

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:01:07.949Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1970487"
          },
          {
            "name": "FEDORA-2021-71de23bedd",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GCKWZWY64EHTOQMLVLTSZ4AA27EWRJMH/"
          },
          {
            "name": "FEDORA-2021-7cd749f133",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGPQZFVJCFGDSISFXPCQTTBBD7QZLJKI/"
          },
          {
            "name": "GLSA-202107-44",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202107-44"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20210805-0004/"
          },
          {
            "name": "[debian-lts-announce] 20220404 [SECURITY] [DLA 2970-1] qemu security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html"
          },
          {
            "name": "[debian-lts-announce] 20230314 [SECURITY] [DLA 3362-1] qemu security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00013.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "QEMU",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "libslirp 4.6.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the udp6_input() function and could occur while processing a udp packet that is smaller than the size of the \u0027udphdr\u0027 structure. This issue may lead to out-of-bounds read access or indirect host memory disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-824",
              "description": "CWE-824",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-03-14T00:00:00",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1970487"
        },
        {
          "name": "FEDORA-2021-71de23bedd",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GCKWZWY64EHTOQMLVLTSZ4AA27EWRJMH/"
        },
        {
          "name": "FEDORA-2021-7cd749f133",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGPQZFVJCFGDSISFXPCQTTBBD7QZLJKI/"
        },
        {
          "name": "GLSA-202107-44",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202107-44"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20210805-0004/"
        },
        {
          "name": "[debian-lts-announce] 20220404 [SECURITY] [DLA 2970-1] qemu security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html"
        },
        {
          "name": "[debian-lts-announce] 20230314 [SECURITY] [DLA 3362-1] qemu security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00013.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2021-3593",
    "datePublished": "2021-06-15T00:00:00",
    "dateReserved": "2021-06-10T00:00:00",
    "dateUpdated": "2024-08-03T17:01:07.949Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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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