CVE-2021-1621 (GCVE-0-2021-1621)
Vulnerability from cvelistv5
Published
2021-09-23 02:31
Modified
2024-11-07 21:51
Severity ?
7.4 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE
Summary
A vulnerability in the Layer 2 punt code of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a queue wedge on an interface that receives specific Layer 2 frames, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of certain Layer 2 frames. An attacker could exploit this vulnerability by sending specific Layer 2 frames on the segment the router is connected to. A successful exploit could allow the attacker to cause a queue wedge on the interface, resulting in a DoS condition.
References
Impacted products
Vendor Product Version
Cisco Cisco IOS XE Software Version: n/a
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T16:18:10.424Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "20210922 Cisco IOS XE Software Interface Queue Wedge Denial of Service Vulnerability",
            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-quewedge-69BsHUBW"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-1621",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-07T21:40:24.888506Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-07T21:51:22.094Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco IOS XE Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2021-09-22T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the Layer 2 punt code of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a queue wedge on an interface that receives specific Layer 2 frames, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of certain Layer 2 frames. An attacker could exploit this vulnerability by sending specific Layer 2 frames on the segment the router is connected to. A successful exploit could allow the attacker to cause a queue wedge on the interface, resulting in a DoS condition."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is 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-399",
              "description": "CWE-399",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-09-23T02:31:07",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "20210922 Cisco IOS XE Software Interface Queue Wedge Denial of Service Vulnerability",
          "tags": [
            "vendor-advisory",
            "x_refsource_CISCO"
          ],
          "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-quewedge-69BsHUBW"
        }
      ],
      "source": {
        "advisory": "cisco-sa-quewedge-69BsHUBW",
        "defect": [
          [
            "CSCvw43399"
          ]
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco IOS XE Software Interface Queue Wedge Denial of Service Vulnerability",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@cisco.com",
          "DATE_PUBLIC": "2021-09-22T16:00:00",
          "ID": "CVE-2021-1621",
          "STATE": "PUBLIC",
          "TITLE": "Cisco IOS XE Software Interface Queue Wedge Denial of Service Vulnerability"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Cisco IOS XE Software",
                      "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": "A vulnerability in the Layer 2 punt code of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a queue wedge on an interface that receives specific Layer 2 frames, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of certain Layer 2 frames. An attacker could exploit this vulnerability by sending specific Layer 2 frames on the segment the router is connected to. A successful exploit could allow the attacker to cause a queue wedge on the interface, resulting in a DoS condition."
            }
          ]
        },
        "exploit": [
          {
            "lang": "en",
            "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
          }
        ],
        "impact": {
          "cvss": {
            "baseScore": "7.4",
            "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-399"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "20210922 Cisco IOS XE Software Interface Queue Wedge Denial of Service Vulnerability",
              "refsource": "CISCO",
              "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-quewedge-69BsHUBW"
            }
          ]
        },
        "source": {
          "advisory": "cisco-sa-quewedge-69BsHUBW",
          "defect": [
            [
              "CSCvw43399"
            ]
          ],
          "discovery": "INTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2021-1621",
    "datePublished": "2021-09-23T02:31:07.087709Z",
    "dateReserved": "2020-11-13T00:00:00",
    "dateUpdated": "2024-11-07T21:51:22.094Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-1621\",\"sourceIdentifier\":\"ykramarz@cisco.com\",\"published\":\"2021-09-23T03:15:13.210\",\"lastModified\":\"2024-11-21T05:44:45.667\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the Layer 2 punt code of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a queue wedge on an interface that receives specific Layer 2 frames, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of certain Layer 2 frames. An attacker could exploit this vulnerability by sending specific Layer 2 frames on the segment the router is connected to. A successful exploit could allow the attacker to cause a queue wedge on the interface, resulting in a DoS condition.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad en el c\u00f3digo de punt de Capa 2 de Cisco IOS XE Software podr\u00eda permitir a un atacante adyacente y no autenticado causar una queue wedge en una interfaz que reciba tramas espec\u00edficas de Capa 2, resultando en una condici\u00f3n de denegaci\u00f3n de servicio (DoS). Esta vulnerabilidad es debido al manejo inapropiado de determinadas tramas de capa 2. Un atacante podr\u00eda explotar esta vulnerabilidad mediante el env\u00edo de tramas espec\u00edficas de capa 2 en el segmento al que est\u00e1 conectado el router. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante causar una queue wedge en la interfaz, resultando en una condici\u00f3n de DoS\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"ykramarz@cisco.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H\",\"baseScore\":7.4,\"baseSeverity\":\"HIGH\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":4.0},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H\",\"baseScore\":7.4,\"baseSeverity\":\"HIGH\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":4.0}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:A/AC:L/Au:N/C:N/I:N/A:P\",\"baseScore\":3.3,\"accessVector\":\"ADJACENT_NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":6.5,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"ykramarz@cisco.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-399\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"17.3.1\",\"matchCriteriaId\":\"100403F0-0796-4993-A2AF-6A14EDC84478\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1000_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F4856E07-B3C2-4674-9584-866F6AF643B2\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1100-4g\\\\/6g_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A6F668B9-2C1D-4306-8286-35E67D0F67C7\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A2D2305B-B69E-4F74-A44E-07B3205CE9F7\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"26DD41B3-1D1D-44D3-BA8E-5A66AFEE77E6\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1952B64C-4AE0-4CCB-86C5-8D1FF6A12822\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5AAD4397-6DCF-493A-BD61-3A890F6F3AB2\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5EB8A757-7888-4AC2-BE44-B89DB83C6C77\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"3F2F0A8E-97F6-41AC-BE67-4B2D60F9D36B\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"BB9229F3-7BCE-46C4-9879-D57B5BAAE44E\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1109_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B80890A8-E3D3-462C-B125-9E9BC6525B02\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1111x-8p_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A5A606FE-E6F1-43F9-B1CD-D9DF35FC3573\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1111x_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0547E196-5991-4C33-823A-342542E9DFD3\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:111x_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"802CBFC1-8A2F-4BF7-A1D3-00622C33BE16\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1120_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7AFE0FC1-EEBC-42F0-88B0-4AF5B76DDD97\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:1160_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D916389F-54DB-44CB-91DD-7CE3C7059350\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"17.3.1\",\"matchCriteriaId\":\"100403F0-0796-4993-A2AF-6A14EDC84478\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4000_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"CE82335E-ECEC-47BD-BC4A-5FDEA08D1A18\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6C8AED7C-DDA3-4C29-BB95-6518C02C551A\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4321_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"9421DBEF-AE42-4234-B49F-FCC34B804D7F\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5419CB9F-241F-4431-914F-2659BE27BEA5\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4351_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7DE02DBE-EAD5-4F37-8AB7-DF46A605A0E2\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5720462A-BE6B-4E84-A1A1-01E80BBA86AD\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4451-x_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"818CEFA6-208C-43C3-8E43-474A93ADCF21\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4451_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"82225D40-537F-41D2-B1C4-1B7D06466B06\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E8B60888-6E2B-494E-AC65-83337661EE7D\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"17.3.1\",\"matchCriteriaId\":\"100403F0-0796-4993-A2AF-6A14EDC84478\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1000:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"91209C16-A620-44A0-9134-8AA456343F29\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1000-x:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FE2182E7-C813-4966-A36C-E648A9344299\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1001:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"ED7C321E-F083-4AB6-96A0-D6358980441E\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7594E307-AC80-41EC-AE94-07E664A7D701\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1001-hx_r:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"33208B25-0CBB-4E31-A892-60B7B5625155\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"09C913FF-63D5-43FB-8B39-598EF436BA5A\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1001-x_r:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"241EEBD9-76E4-4AE6-96B8-1C1ACD834F17\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1002:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E4376E56-A21C-4642-A85D-439C8E21CD7F\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"CD2794BD-C8CE-46EF-9857-1723FCF04E46\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1002-hx_r:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"CC03A84F-C8F2-4225-9A00-8FA35368CD57\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"444F688F-79D0-4F22-B530-7BD520080B8F\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1002-x_r:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"51F2A755-556C-4C5E-8622-96D124319AF7\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"55DD2272-10C2-43B9-9F13-6DC41DBE179B\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7428E0A8-1641-47FB-9CA9-34311DEF660D\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1006-x:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DE7401B7-094C-46EB-9869-2F0372E8B26B\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1009-x:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"8D8A72FD-D8B0-45B5-8FAD-6D8395BB218A\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"854D9594-FE84-4E7B-BA21-A3287F2DC302\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_1023:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C81CC6E3-B989-4730-820E-46734E3E608D\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"17.3.1\",\"matchCriteriaId\":\"100403F0-0796-4993-A2AF-6A14EDC84478\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:csr_1000v:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"BF8B0B49-2C99-410B-B011-5B821C5992FB\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"17.3.1\",\"matchCriteriaId\":\"100403F0-0796-4993-A2AF-6A14EDC84478\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:isrv:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DA48CFE9-2791-40D2-9F33-763C97F7D988\"}]}]}],\"references\":[{\"url\":\"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-quewedge-69BsHUBW\",\"source\":\"ykramarz@cisco.com\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-quewedge-69BsHUBW\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-quewedge-69BsHUBW\", \"name\": \"20210922 Cisco IOS XE Software Interface Queue Wedge Denial of Service Vulnerability\", \"tags\": [\"vendor-advisory\", \"x_refsource_CISCO\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T16:18:10.424Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-1621\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-11-07T21:40:24.888506Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-11-07T21:41:12.297Z\"}}], \"cna\": {\"title\": \"Cisco IOS XE Software Interface Queue Wedge Denial of Service Vulnerability\", \"source\": {\"defect\": [[\"CSCvw43399\"]], \"advisory\": \"cisco-sa-quewedge-69BsHUBW\", \"discovery\": \"INTERNAL\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 7.4, \"attackVector\": \"ADJACENT_NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"Cisco\", \"product\": \"Cisco IOS XE Software\", \"versions\": [{\"status\": \"affected\", \"version\": \"n/a\"}]}], \"exploits\": [{\"lang\": \"en\", \"value\": \"The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.\"}], \"datePublic\": \"2021-09-22T00:00:00\", \"references\": [{\"url\": \"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-quewedge-69BsHUBW\", \"name\": \"20210922 Cisco IOS XE Software Interface Queue Wedge Denial of Service Vulnerability\", \"tags\": [\"vendor-advisory\", \"x_refsource_CISCO\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability in the Layer 2 punt code of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a queue wedge on an interface that receives specific Layer 2 frames, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of certain Layer 2 frames. An attacker could exploit this vulnerability by sending specific Layer 2 frames on the segment the router is connected to. A successful exploit could allow the attacker to cause a queue wedge on the interface, resulting in a DoS condition.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-399\", \"description\": \"CWE-399\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2021-09-23T02:31:07\"}, \"x_legacyV4Record\": {\"impact\": {\"cvss\": {\"version\": \"3.0\", \"baseScore\": \"7.4\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H\"}}, \"source\": {\"defect\": [[\"CSCvw43399\"]], \"advisory\": \"cisco-sa-quewedge-69BsHUBW\", \"discovery\": \"INTERNAL\"}, \"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"version\": {\"version_data\": [{\"version_value\": \"n/a\"}]}, \"product_name\": \"Cisco IOS XE Software\"}]}, \"vendor_name\": \"Cisco\"}]}}, \"exploit\": [{\"lang\": \"en\", \"value\": \"The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.\"}], \"data_type\": \"CVE\", \"references\": {\"reference_data\": [{\"url\": \"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-quewedge-69BsHUBW\", \"name\": \"20210922 Cisco IOS XE Software Interface Queue Wedge Denial of Service Vulnerability\", \"refsource\": \"CISCO\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"A vulnerability in the Layer 2 punt code of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a queue wedge on an interface that receives specific Layer 2 frames, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of certain Layer 2 frames. An attacker could exploit this vulnerability by sending specific Layer 2 frames on the segment the router is connected to. A successful exploit could allow the attacker to cause a queue wedge on the interface, resulting in a DoS condition.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"CWE-399\"}]}]}, \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2021-1621\", \"STATE\": \"PUBLIC\", \"TITLE\": \"Cisco IOS XE Software Interface Queue Wedge Denial of Service Vulnerability\", \"ASSIGNER\": \"psirt@cisco.com\", \"DATE_PUBLIC\": \"2021-09-22T16:00:00\"}}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-1621\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-11-07T21:51:22.094Z\", \"dateReserved\": \"2020-11-13T00:00:00\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2021-09-23T02:31:07.087709Z\", \"assignerShortName\": \"cisco\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.