Vulnerability-Lookup

CNVD-2021-45758

Vulnerability from cnvd - Published: 2021-06-29

Title

Dell BIOSConnect功能缓冲区溢出漏洞

Description

Dell BIOSConnect是美国戴尔（Dell）公司的一个基础平台，使BIOS可连接到Dell的 HTTP后端，并通过HTTP方法加载映像。 Dell BIOSConnect功能存在缓冲区错误漏洞，攻击者可利用漏洞运行任意代码并绕过UEFI限制。

Severity

中

Patch Name

Dell BIOSConnect功能缓冲区溢出漏洞的补丁

Patch Description

Dell BIOSConnect是美国戴尔（Dell）公司的一个基础平台，使BIOS可连接到Dell的 HTTP后端，并通过HTTP方法加载映像。 Dell BIOSConnect功能存在缓冲区错误漏洞，攻击者可利用漏洞运行任意代码并绕过UEFI限制。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

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://www.dell.com/support/kbdoc/en-us/000188682

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-21573

Impacted products

Name
Dell BIOSConnect

Show details on source website

JSON

To clipboard

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    "cve": {
      "cveNumber": "CVE-2021-21572"
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  "number": "CNVD-2021-45758",
  "openTime": "2021-06-29",
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  "products": {
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  "serverity": "\u4e2d",
  "submitTime": "2021-06-25",
  "title": "Dell BIOSConnect\u529f\u80fd\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2021-21572 (GCVE-0-2021-21572)

Vulnerability from cvelistv5 – Published: 2021-06-24 17:00 – Updated: 2024-09-16 19:30

Summary

Dell BIOSConnect feature contains a buffer overflow vulnerability. An authenticated malicious admin user with local access to the system may potentially exploit this vulnerability to run arbitrary code and bypass UEFI restrictions.

Severity

7.2 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

dell mitre root

References

1 reference

URL	Tags
https://www.dell.com/support/kbdoc/en-us/000188682	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Dell	BIOSConnect	Affected: unspecified , < Gen 11, Gen 10 (custom)

Date Public

2021-06-24 00:00

Show details on NVD website

JSON

To clipboard

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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.