cnvd - cnvd-2021-35515

CNVD-2021-35515

Vulnerability from cnvd - Published: 2021-05-19

Title

Cisco Link Layer Discovery Protocol缓冲区溢出漏洞

Description

Cisco Link Layer Discovery Protocol是美国思科（Cisco）公司的一个路由器。 Cisco Link Layer Discovery Protocol存在缓冲区溢出漏洞，未经身份验证的相邻攻击者可利用该漏洞执行任意代码。

Severity

高

Patch Name

Cisco Link Layer Discovery Protocol缓冲区溢出漏洞的补丁

Patch Description

Cisco Link Layer Discovery Protocol是美国思科（Cisco）公司的一个路由器。 Cisco Link Layer Discovery Protocol存在缓冲区溢出漏洞，未经身份验证的相邻攻击者可利用该漏洞执行任意代码。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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-multi-lldp-u7e4chCe

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-1309

Impacted products

Name
Cisco Link Layer Discovery Protocol

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-1309"
    }
  },
  "description": "Cisco Link Layer Discovery Protocol\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u8def\u7531\u5668\u3002\n\nCisco Link Layer Discovery Protocol\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u672a\u7ecf\u8eab\u4efd\u9a8c\u8bc1\u7684\u76f8\u90bb\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u6267\u884c\u4efb\u610f\u4ee3\u7801\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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-multi-lldp-u7e4chCe",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-35515",
  "openTime": "2021-05-19",
  "patchDescription": "Cisco Link Layer Discovery Protocol\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u8def\u7531\u5668\u3002\r\n\r\nCisco Link Layer Discovery Protocol\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u672a\u7ecf\u8eab\u4efd\u9a8c\u8bc1\u7684\u76f8\u90bb\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": "Cisco Link Layer Discovery Protocol\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco Link Layer Discovery Protocol"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-1309",
  "serverity": "\u9ad8",
  "submitTime": "2021-04-08",
  "title": "Cisco Link Layer Discovery Protocol\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2021-1309 (GCVE-0-2021-1309)

Vulnerability from cvelistv5 – Published: 2021-04-08 04:05 – Updated: 2024-11-08 23:29

Summary

Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business RV Series Routers. An unauthenticated, adjacent attacker could execute arbitrary code or cause an affected router to leak system memory or reload. A memory leak or device reload would cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory. Note: LLDP is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).

Severity ?

7.4 (High)


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

CWE

CWE-119

Assigner

cisco

References

URL

Tags

https://tools.cisco.com/security/center/content/C…

vendor-advisoryx_refsource_CISCO

Impacted products

	Vendor	Product	Version
	Cisco	Cisco Small Business RV Series Router Firmware	Affected: n/a

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T16:02:56.418Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "20210407 Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities",
            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-multi-lldp-u7e4chCe"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-1309",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-08T20:46:45.692659Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-08T23:29:40.340Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco Small Business RV Series Router Firmware",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2021-04-07T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business RV Series Routers. An unauthenticated, adjacent attacker could execute arbitrary code or cause an affected router to leak system memory or reload. A memory leak or device reload would cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory. Note: LLDP is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent)."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "CWE-119",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-04-08T04:05:30",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "20210407 Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities",
          "tags": [
            "vendor-advisory",
            "x_refsource_CISCO"
          ],
          "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-multi-lldp-u7e4chCe"
        }
      ],
      "source": {
        "advisory": "cisco-sa-rv-multi-lldp-u7e4chCe",
        "defect": [
          [
            "CSCvw62392",
            "CSCvw62395",
            "CSCvw62410",
            "CSCvw62411",
            "CSCvw62413",
            "CSCvw62416",
            "CSCvw62417",
            "CSCvw62418",
            "CSCvw94339",
            "CSCvw94341",
            "CSCvw95016",
            "CSCvw95017"
          ]
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@cisco.com",
          "DATE_PUBLIC": "2021-04-07T16:00:00",
          "ID": "CVE-2021-1309",
          "STATE": "PUBLIC",
          "TITLE": "Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Cisco Small Business RV Series Router Firmware",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Cisco"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business RV Series Routers. An unauthenticated, adjacent attacker could execute arbitrary code or cause an affected router to leak system memory or reload. A memory leak or device reload would cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory. Note: LLDP is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent)."
            }
          ]
        },
        "exploit": [
          {
            "lang": "en",
            "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
          }
        ],
        "impact": {
          "cvss": {
            "baseScore": "8.8",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.0"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-119"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "20210407 Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities",
              "refsource": "CISCO",
              "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-multi-lldp-u7e4chCe"
            }
          ]
        },
        "source": {
          "advisory": "cisco-sa-rv-multi-lldp-u7e4chCe",
          "defect": [
            [
              "CSCvw62392",
              "CSCvw62395",
              "CSCvw62410",
              "CSCvw62411",
              "CSCvw62413",
              "CSCvw62416",
              "CSCvw62417",
              "CSCvw62418",
              "CSCvw94339",
              "CSCvw94341",
              "CSCvw95016",
              "CSCvw95017"
            ]
          ],
          "discovery": "INTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2021-1309",
    "datePublished": "2021-04-08T04:05:30.866624Z",
    "dateReserved": "2020-11-13T00:00:00",
    "dateUpdated": "2024-11-08T23:29:40.340Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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-2021-35515

CVE-2021-1309 (GCVE-0-2021-1309)

Tags

Sightings

Nomenclature