Vulnerability-Lookup

CNVD-2020-61965

Vulnerability from cnvd - Published: 2020-11-11

Title

QEMU越界访问漏洞

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 4.2.1中的hw/display/ati_2d.c中的ati_2d_blt存在越界访问漏洞。攻击者可利用该漏洞导致QEMU进程崩溃。

Severity

高

Patch Name

QEMU越界访问漏洞的补丁

Patch 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 4.2.1中的hw/display/ati_2d.c中的ati_2d_blt存在越界访问漏洞。攻击者可利用该漏洞导致QEMU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

厂商已发布了漏洞修复程序，请及时关注更新： https://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg05018.html

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-27616

Impacted products

Name
Qemu QEMU 4.2.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-27616",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-27616"
    }
  },
  "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 4.2.1\u4e2d\u7684hw/display/ati_2d.c\u4e2d\u7684ati_2d_blt\u5b58\u5728\u8d8a\u754c\u8bbf\u95ee\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4QEMU\u8fdb\u7a0b\u5d29\u6e83\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://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg05018.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-61965",
  "openTime": "2020-11-11",
  "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 4.2.1\u4e2d\u7684hw/display/ati_2d.c\u4e2d\u7684ati_2d_blt\u5b58\u5728\u8d8a\u754c\u8bbf\u95ee\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4QEMU\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": "QEMU\u8d8a\u754c\u8bbf\u95ee\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Qemu QEMU 4.2.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-27616",
  "serverity": "\u9ad8",
  "submitTime": "2020-11-09",
  "title": "QEMU\u8d8a\u754c\u8bbf\u95ee\u6f0f\u6d1e"
}

CVE-2020-27616 (GCVE-0-2020-27616)

Vulnerability from cvelistv5 – Published: 2020-11-06 07:48 – Updated: 2024-08-04 16:18

Summary

ati_2d_blt in hw/display/ati_2d.c in QEMU 4.2.1 can encounter an outside-limits situation in a calculation. A guest can crash the QEMU process.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
https://lists.nongnu.org/archive/html/qemu-devel/…	x_refsource_MISC
http://www.openwall.com/lists/oss-security/2020/11/03/2	x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-2020120…	x_refsource_CONFIRM

Show details on NVD website

JSON

To clipboard

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        ],
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          "url": "https://security.netapp.com/advisory/ntap-20201202-0002/"
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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.

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.

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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-2020-61965

CVE-2020-27616 (GCVE-0-2020-27616)

Tags

Sightings

Nomenclature

Related by attack behaviour