Vulnerability-Lookup

CNVD-2021-46558

Vulnerability from cnvd - Published: 2021-07-02

Title

Dell PowerEdge Server缓冲区溢出漏洞

Description

Dell PowerEdge Server BIOS是戴尔（Dell）的一款系统更新驱动程序。 Dell PowerEdge Server 存在安全漏洞，攻击者可利用该漏洞导致在系统管理模式下拒绝服务、任意代码执行或信息公开。

Severity

高

Patch Name

Dell PowerEdge Server缓冲区溢出漏洞的补丁

Patch Description

Dell PowerEdge Server BIOS是戴尔（Dell）的一款系统更新驱动程序。 Dell PowerEdge Server 存在安全漏洞，攻击者可利用该漏洞导致在系统管理模式下拒绝服务、任意代码执行或信息公开。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/000187958

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-21557

Impacted products

Name
Dell PowerEdge Server

Show details on source website

JSON

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    "cve": {
      "cveNumber": "CVE-2021-21557"
    }
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-46558",
  "openTime": "2021-07-02",
  "patchDescription": "Dell PowerEdge Server BIOS\u662f\u6234\u5c14\uff08Dell\uff09\u7684\u4e00\u6b3e\u7cfb\u7edf\u66f4\u65b0\u9a71\u52a8\u7a0b\u5e8f\u3002\r\n\r\nDell PowerEdge Server \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u5728\u7cfb\u7edf\u7ba1\u7406\u6a21\u5f0f\u4e0b\u62d2\u7edd\u670d\u52a1\u3001\u4efb\u610f\u4ee3\u7801\u6267\u884c\u6216\u4fe1\u606f\u516c\u5f00\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": "Dell PowerEdge Server\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
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  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-21557",
  "serverity": "\u9ad8",
  "submitTime": "2021-06-17",
  "title": "Dell PowerEdge Server\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2021-21557 (GCVE-0-2021-21557)

Vulnerability from cvelistv5 – Published: 2021-06-14 19:10 – Updated: 2024-09-16 17:02

Summary

Dell PowerEdge Server BIOS and select Dell Precision Rack BIOS contain an out-of-bounds array access vulnerability. A local malicious user with high privileges may potentially exploit this vulnerability, leading to a denial of service, arbitrary code execution, or information disclosure in System Management Mode.

Severity

8.1 (High)


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

CWE

CWE-20 - Improper Input Validation

Assigner

dell mitre root

References

1 reference

URL	Tags
https://www.dell.com/support/kbdoc/000187958	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Dell	PowerEdge BIOS Intel 15G	Affected: unspecified , < 2.11.2 (custom)

Date Public

2021-06-08 00:00

Show details on NVD website

JSON

To clipboard

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            "confidentialityImpact": "HIGH",
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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.

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CNVD-2021-46558

CVE-2021-21557 (GCVE-0-2021-21557)

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