Vulnerability-Lookup

CNVD-2021-45152

Vulnerability from cnvd - Published: 2021-06-25

Title

QEMU存在未明漏洞

Description

QEMU是一套由法布里斯·贝拉(Fabrice Bellard)所编写的、以GPL许可证分发源码的模拟处理器，在GNU/Linux平台上使用广泛。 QEMU 的 slirp 存在安全漏洞，该漏洞源于src/bootp.c 中的 bootp_input() 函数在处理来自来宾的小于 bootp_t 结构（548 字节）大小的 bootp 协议请求的 udp 数据包时，它使用工作 mbuf 缓冲区外部的内存。这可能会导致 10 字节未初始化的堆内存泄漏给来宾。目前没有详细的漏洞细节提供。

Severity

低

Patch Name

QEMU存在未明漏洞的补丁

Patch Description

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=1970484

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-3592

Impacted products

Name
Qemu QEMU

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-3592",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-3592"
    }
  },
  "description": "QEMU\u662f\u4e00\u5957\u7531\u6cd5\u5e03\u91cc\u65af\u00b7\u8d1d\u62c9(Fabrice Bellard)\u6240\u7f16\u5199\u7684\u3001\u4ee5GPL\u8bb8\u53ef\u8bc1\u5206\u53d1\u6e90\u7801\u7684\u6a21\u62df\u5904\u7406\u5668\uff0c\u5728GNU/Linux\u5e73\u53f0\u4e0a\u4f7f\u7528\u5e7f\u6cdb\u3002\n\nQEMU \u7684 slirp \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8esrc/bootp.c \u4e2d\u7684 bootp_input() \u51fd\u6570\u5728\u5904\u7406\u6765\u81ea\u6765\u5bbe\u7684\u5c0f\u4e8e bootp_t \u7ed3\u6784\uff08548 \u5b57\u8282\uff09\u5927\u5c0f\u7684 bootp \u534f\u8bae\u8bf7\u6c42\u7684 udp \u6570\u636e\u5305\u65f6\uff0c\u5b83\u4f7f\u7528\u5de5\u4f5c mbuf \u7f13\u51b2\u533a\u5916\u90e8\u7684\u5185\u5b58\u3002\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4 10 \u5b57\u8282\u672a\u521d\u59cb\u5316\u7684\u5806\u5185\u5b58\u6cc4\u6f0f\u7ed9\u6765\u5bbe\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://bugzilla.redhat.com/show_bug.cgi?id=1970484",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-45152",
  "openTime": "2021-06-25",
  "patchDescription": "QEMU\u662f\u4e00\u5957\u7531\u6cd5\u5e03\u91cc\u65af\u00b7\u8d1d\u62c9(Fabrice Bellard)\u6240\u7f16\u5199\u7684\u3001\u4ee5GPL\u8bb8\u53ef\u8bc1\u5206\u53d1\u6e90\u7801\u7684\u6a21\u62df\u5904\u7406\u5668\uff0c\u5728GNU/Linux\u5e73\u53f0\u4e0a\u4f7f\u7528\u5e7f\u6cdb\u3002\r\n\r\nQEMU \u7684 slirp \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8esrc/bootp.c \u4e2d\u7684 bootp_input() \u51fd\u6570\u5728\u5904\u7406\u6765\u81ea\u6765\u5bbe\u7684\u5c0f\u4e8e bootp_t \u7ed3\u6784\uff08548 \u5b57\u8282\uff09\u5927\u5c0f\u7684 bootp \u534f\u8bae\u8bf7\u6c42\u7684 udp \u6570\u636e\u5305\u65f6\uff0c\u5b83\u4f7f\u7528\u5de5\u4f5c mbuf \u7f13\u51b2\u533a\u5916\u90e8\u7684\u5185\u5b58\u3002\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4 10 \u5b57\u8282\u672a\u521d\u59cb\u5316\u7684\u5806\u5185\u5b58\u6cc4\u6f0f\u7ed9\u6765\u5bbe\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\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Qemu QEMU"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-3592",
  "serverity": "\u4f4e",
  "submitTime": "2021-06-16",
  "title": "QEMU\u5b58\u5728\u672a\u660e\u6f0f\u6d1e"
}

CVE-2021-3592 (GCVE-0-2021-3592)

Vulnerability from cvelistv5 – Published: 2021-06-15 00:00 – Updated: 2024-08-03 17:01

Summary

An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the bootp_input() function and could occur while processing a udp packet that is smaller than the size of the 'bootp_t' structure. A malicious guest could use this flaw to leak 10 bytes of uninitialized heap memory from the host. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.

Severity

No CVSS data available.

CWE

CWE-824

Assigner

redhat redhat root

References

8 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1970484
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.gentoo.org/glsa/202107-44	vendor-advisory
https://security.netapp.com/advisory/ntap-2021080…
https://lists.debian.org/debian-lts-announce/2021…	mailing-list
https://lists.debian.org/debian-lts-announce/2021…	mailing-list
https://lists.debian.org/debian-lts-announce/2023…	mailing-list

Impacted products

1 product

Vendor	Product	Version
n/a	QEMU	Affected: libslirp 4.6.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:01:06.527Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1970484"
          },
          {
            "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] 20210902 [SECURITY] [DLA 2753-1] qemu security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html"
          },
          {
            "name": "[debian-lts-announce] 20210911 [SECURITY] [DLA 2753-2] qemu regression update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/09/msg00004.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 bootp_input() function and could occur while processing a udp packet that is smaller than the size of the \u0027bootp_t\u0027 structure. A malicious guest could use this flaw to leak 10 bytes of uninitialized heap memory from the host. 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": "2023-03-14T00:00:00.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1970484"
        },
        {
          "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] 20210902 [SECURITY] [DLA 2753-1] qemu security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html"
        },
        {
          "name": "[debian-lts-announce] 20210911 [SECURITY] [DLA 2753-2] qemu regression update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/09/msg00004.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-2021-3592",
    "datePublished": "2021-06-15T00:00:00.000Z",
    "dateReserved": "2021-06-10T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:01:06.527Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CNVD-2021-45152

CVE-2021-3592 (GCVE-0-2021-3592)

Tags

Sightings

Nomenclature

Related by attack behaviour