Vulnerability-Lookup

CNVD-2022-38537

Vulnerability from cnvd - Published: 2022-05-20

Title

D-Link DIR-842 telnetd认证防爆破保护机制绕过漏洞

Description

D-Link DIR-842是台湾友讯科技股份有限公司生产的家用路由器。 D-Link DIR-842存在telnetd认证防爆破保护机制绕过漏洞，攻击者可利用该漏洞通过基于时间的侧信道攻击绕过反暴力冷却延迟期。

Severity

中

Patch Name

D-Link DIR-842 telnetd认证防爆破保护机制绕过漏洞的补丁

Patch Description

D-Link DIR-842是台湾友讯科技股份有限公司生产的家用路由器。 D-Link DIR-842存在telnetd认证防爆破保护机制绕过漏洞，攻击者可利用该漏洞通过基于时间的侧信道攻击绕过反暴力冷却延迟期。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，详情请关注厂商主页： https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-27342

Impacted products

Name
D-Link D-Link DIR-842 3.0.2

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-27342",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-27342"
    }
  },
  "description": "D-Link DIR-842\u662f\u53f0\u6e7e\u53cb\u8baf\u79d1\u6280\u80a1\u4efd\u6709\u9650\u516c\u53f8\u751f\u4ea7\u7684\u5bb6\u7528\u8def\u7531\u5668\u3002\n\nD-Link DIR-842\u5b58\u5728telnetd\u8ba4\u8bc1\u9632\u7206\u7834\u4fdd\u62a4\u673a\u5236\u7ed5\u8fc7\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u57fa\u4e8e\u65f6\u95f4\u7684\u4fa7\u4fe1\u9053\u653b\u51fb\u7ed5\u8fc7\u53cd\u66b4\u529b\u51b7\u5374\u5ef6\u8fdf\u671f\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a\r\nhttps://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-38537",
  "openTime": "2022-05-20",
  "patchDescription": "D-Link DIR-842\u662f\u53f0\u6e7e\u53cb\u8baf\u79d1\u6280\u80a1\u4efd\u6709\u9650\u516c\u53f8\u751f\u4ea7\u7684\u5bb6\u7528\u8def\u7531\u5668\u3002\r\n\r\nD-Link DIR-842\u5b58\u5728telnetd\u8ba4\u8bc1\u9632\u7206\u7834\u4fdd\u62a4\u673a\u5236\u7ed5\u8fc7\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u57fa\u4e8e\u65f6\u95f4\u7684\u4fa7\u4fe1\u9053\u653b\u51fb\u7ed5\u8fc7\u53cd\u66b4\u529b\u51b7\u5374\u5ef6\u8fdf\u671f\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 DIR-842 telnetd\u8ba4\u8bc1\u9632\u7206\u7834\u4fdd\u62a4\u673a\u5236\u7ed5\u8fc7\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "D-Link D-Link DIR-842 3.0.2"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-27342",
  "serverity": "\u4e2d",
  "submitTime": "2021-05-18",
  "title": "D-Link DIR-842 telnetd\u8ba4\u8bc1\u9632\u7206\u7834\u4fdd\u62a4\u673a\u5236\u7ed5\u8fc7\u6f0f\u6d1e"
}

CVE-2021-27342 (GCVE-0-2021-27342)

Vulnerability from cvelistv5 – Published: 2021-05-17 12:20 – Updated: 2024-08-03 20:48

Summary

An authentication brute-force protection mechanism bypass in telnetd in D-Link Router model DIR-842 firmware version 3.0.2 allows a remote attacker to circumvent the anti-brute-force cool-down delay period via a timing-based side-channel attack

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://supportannouncement.us.dlink.com/announce…	x_refsource_CONFIRM
	https://github.com/guywhataguy/D-Link-CVE-2021-27…	x_refsource_MISC
	https://blog.whtaguy.com/2021/05/d-link-router-cv…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T20:48:16.145Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An authentication brute-force protection mechanism bypass in telnetd in D-Link Router model DIR-842 firmware version 3.0.2 allows a remote attacker to circumvent the anti-brute-force cool-down delay period via a timing-based side-channel attack"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-05-17T12:20:43.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-27342",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "An authentication brute-force protection mechanism bypass in telnetd in D-Link Router model DIR-842 firmware version 3.0.2 allows a remote attacker to circumvent the anti-brute-force cool-down delay period via a timing-based side-channel attack"
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225",
              "refsource": "CONFIRM",
              "url": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225"
            },
            {
              "name": "https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py",
              "refsource": "MISC",
              "url": "https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py"
            },
            {
              "name": "https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html",
              "refsource": "MISC",
              "url": "https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-27342",
    "datePublished": "2021-05-17T12:20:43.000Z",
    "dateReserved": "2021-02-16T00:00:00.000Z",
    "dateUpdated": "2024-08-03T20:48:16.145Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Action not permitted

CNVD-2022-38537

CVE-2021-27342 (GCVE-0-2021-27342)

Tags

Sightings

Nomenclature