Vulnerability-Lookup

CNVD-2021-40325

Vulnerability from cnvd - Published: 2021-06-08

Title

D-Link DAP-2020命令注入漏洞（CNVD-2021-40325）

Description

D-Link DAP-2020是中国台湾友讯（D-Link）公司的一款WiFi范围扩展器。TCP（Transmission Control Protocol,传输控制协议）是一种面向连接的、可靠的、基于字节流的传输层通信协议，由IETF的RFC 793定义。 D-Link DAP-2020 v1.01rc001版本在处理CGI脚本时存在命令注入漏洞。该漏洞源于程序在执行系统调用之前未对用户提供的字符串进行正确验证。攻击者可利用该漏洞执行任意代码。

Severity

高

Patch Name

D-Link DAP-2020命令注入漏洞（CNVD-2021-40325）的补丁

Patch Description

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://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-27249

Impacted products

Name
D-Link DAP-2020 v1.01rc001

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-27249",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-27249"
    }
  },
  "description": "D-Link DAP-2020\u662f\u4e2d\u56fd\u53f0\u6e7e\u53cb\u8baf\uff08D-Link\uff09\u516c\u53f8\u7684\u4e00\u6b3eWiFi\u8303\u56f4\u6269\u5c55\u5668\u3002TCP\uff08Transmission Control Protocol,\u4f20\u8f93\u63a7\u5236\u534f\u8bae\uff09\u662f\u4e00\u79cd\u9762\u5411\u8fde\u63a5\u7684\u3001\u53ef\u9760\u7684\u3001\u57fa\u4e8e\u5b57\u8282\u6d41\u7684\u4f20\u8f93\u5c42\u901a\u4fe1\u534f\u8bae\uff0c\u7531IETF\u7684RFC 793\u5b9a\u4e49\u3002\n\nD-Link DAP-2020 v1.01rc001\u7248\u672c\u5728\u5904\u7406CGI\u811a\u672c\u65f6\u5b58\u5728\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u5728\u6267\u884c\u7cfb\u7edf\u8c03\u7528\u4e4b\u524d\u672a\u5bf9\u7528\u6237\u63d0\u4f9b\u7684\u5b57\u7b26\u4e32\u8fdb\u884c\u6b63\u786e\u9a8c\u8bc1\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-40325",
  "openTime": "2021-06-08",
  "patchDescription": "D-Link DAP-2020\u662f\u4e2d\u56fd\u53f0\u6e7e\u53cb\u8baf\uff08D-Link\uff09\u516c\u53f8\u7684\u4e00\u6b3eWiFi\u8303\u56f4\u6269\u5c55\u5668\u3002TCP\uff08Transmission Control Protocol,\u4f20\u8f93\u63a7\u5236\u534f\u8bae\uff09\u662f\u4e00\u79cd\u9762\u5411\u8fde\u63a5\u7684\u3001\u53ef\u9760\u7684\u3001\u57fa\u4e8e\u5b57\u8282\u6d41\u7684\u4f20\u8f93\u5c42\u901a\u4fe1\u534f\u8bae\uff0c\u7531IETF\u7684RFC 793\u5b9a\u4e49\u3002\r\n\r\nD-Link DAP-2020 v1.01rc001\u7248\u672c\u5728\u5904\u7406CGI\u811a\u672c\u65f6\u5b58\u5728\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u5728\u6267\u884c\u7cfb\u7edf\u8c03\u7528\u4e4b\u524d\u672a\u5bf9\u7528\u6237\u63d0\u4f9b\u7684\u5b57\u7b26\u4e32\u8fdb\u884c\u6b63\u786e\u9a8c\u8bc1\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u6267\u884c\u4efb\u610f\u4ee3\u7801\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": "D-Link DAP-2020\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\uff08CNVD-2021-40325\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "D-Link DAP-2020 v1.01rc001"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-27249",
  "serverity": "\u9ad8",
  "submitTime": "2021-04-29",
  "title": "D-Link DAP-2020\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\uff08CNVD-2021-40325\uff09"
}

CVE-2021-27249 (GCVE-0-2021-27249)

Vulnerability from cvelistv5 – Published: 2021-04-14 15:45 – Updated: 2024-08-03 20:48

Summary

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 v1.01rc001 Wi-Fi access points. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of CGI scripts. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11369.

Severity ?

8.8 (High)


                        
                          CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

zdi

References

URL

Tags

	https://supportannouncement.us.dlink.com/announce…	x_refsource_MISC
	https://www.zerodayinitiative.com/advisories/ZDI-…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	D-Link	DAP-2020	Affected: v1.01rc001

Credits

Anthony Schneiter & Jannis Kirschner from Team SUID (in alphabetical order)

Show details on NVD website

JSON

To clipboard

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            "url": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201"
          },
          {
            "tags": [
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            "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-204/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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        }
      ],
      "metrics": [
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            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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      "problemTypes": [
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        },
        {
          "tags": [
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          "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-204/"
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      "x_legacyV4Record": {
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Sightings

Author	Source	Type	Date

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.

Action not permitted

CNVD-2021-40325

CVE-2021-27249 (GCVE-0-2021-27249)

Tags

Sightings

Nomenclature