Vulnerability-Lookup

CNVD-2021-39772

Vulnerability from cnvd - Published: 2021-06-06

Title

QEMU拒绝服务漏洞（CNVD-2021-39772）

Description

QEMU是一套模拟处理器软件。 QEMU 存在安全漏洞。攻击者可利用该漏洞通过QEMU的e1000e空包描述符触发过载，以触发主机系统上的拒绝服务。

Severity

低

Formal description

目前厂商暂未发布修复措施解决此安全问题，建议使用此软件的用户随时关注厂商主页或参考网址以获取解决办法： https://git.qemu.org/?p=qemu.git;a=commitdiff;h=c2cb511634012344e3d0fe49a037a33b12d8a98a

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-28916

Impacted products

Name
Qemu QEMU 5.0.0

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-28916",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-28916"
    }
  },
  "description": "QEMU\u662f\u4e00\u5957\u6a21\u62df\u5904\u7406\u5668\u8f6f\u4ef6\u3002\n\nQEMU \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7QEMU\u7684e1000e\u7a7a\u5305\u63cf\u8ff0\u7b26\u89e6\u53d1\u8fc7\u8f7d\uff0c\u4ee5\u89e6\u53d1\u4e3b\u673a\u7cfb\u7edf\u4e0a\u7684\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u6682\u672a\u53d1\u5e03\u4fee\u590d\u63aa\u65bd\u89e3\u51b3\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u5efa\u8bae\u4f7f\u7528\u6b64\u8f6f\u4ef6\u7684\u7528\u6237\u968f\u65f6\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u6216\u53c2\u8003\u7f51\u5740\u4ee5\u83b7\u53d6\u89e3\u51b3\u529e\u6cd5\uff1a\r\nhttps://git.qemu.org/?p=qemu.git;a=commitdiff;h=c2cb511634012344e3d0fe49a037a33b12d8a98a",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-39772",
  "openTime": "2021-06-06",
  "products": {
    "product": "Qemu QEMU 5.0.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-28916",
  "serverity": "\u4f4e",
  "submitTime": "2020-12-02",
  "title": "QEMU\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-39772\uff09"
}

CVE-2020-28916 (GCVE-0-2020-28916)

Vulnerability from cvelistv5 – Published: 2020-12-04 06:22 – Updated: 2024-08-04 16:41

Summary

hw/net/e1000e_core.c in QEMU 5.0.0 has an infinite loop via an RX descriptor with a NULL buffer address.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

4 references

URL	Tags
https://lists.nongnu.org/archive/html/qemu-devel/…	x_refsource_MISC
http://www.openwall.com/lists/oss-security/2020/12/01/2	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST

Show details on NVD website

JSON

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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.

Detection rules are retrieved from Rulezet.

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.