github - ghsa-r2p4-pwjj-hqr4

ghsa-r2p4-pwjj-hqr4

Vulnerability from github

Published

2024-11-15 18:30

Modified

2024-11-15 18:30

Severity ?

6.1 (Medium) - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

Details

A vulnerability in the Broadband Network Gateway PPP over Ethernet (PPPoE) feature of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the PPPoE process to continually crash. This vulnerability exists because the PPPoE feature does not properly handle an error condition within a specific crafted packet sequence. An attacker could exploit this vulnerability by sending a sequence of specific PPPoE packets from controlled customer premises equipment (CPE). A successful exploit could allow the attacker to cause the PPPoE process to continually restart, resulting in a denial of service condition (DoS).Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.This advisory is part of the September 2022 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see .

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{
  "affected": [],
  "aliases": [
    "CVE-2022-20849"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-391"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-15T16:15:23Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability in the Broadband Network Gateway PPP over Ethernet (PPPoE) feature of Cisco\u0026nbsp;IOS XR Software could allow an unauthenticated, adjacent attacker to cause the PPPoE process to continually crash.\nThis vulnerability exists because the PPPoE feature does not properly handle an error condition within a specific crafted packet sequence. An attacker could exploit this vulnerability by sending a sequence of specific PPPoE packets from controlled customer premises equipment (CPE). A successful exploit could allow the attacker to cause the PPPoE process to continually restart, resulting in a denial of service condition (DoS).Cisco\u0026nbsp;has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.This advisory is part of the September 2022 release of the Cisco\u0026nbsp;IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see .",
  "id": "GHSA-r2p4-pwjj-hqr4",
  "modified": "2024-11-15T18:30:50Z",
  "published": "2024-11-15T18:30:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-20849"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2022-20849

Vulnerability from cvelistv5

Published

2024-11-15 15:31

Modified

2024-11-15 15:46

Severity ?

6.1 (Medium) - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

Summary

Cisco IOS XR Software Broadband Network Gateway PPPoE Denial of Service Vulnerability

References

▼	URL	Tags
	https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt

Impacted products

▼	Vendor	Product
	Cisco	Cisco IOS XR Software

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-20849",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-15T15:46:04.754318Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-15T15:46:25.684Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Cisco IOS XR Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "6.5.3"
            },
            {
              "status": "affected",
              "version": "6.6.1"
            },
            {
              "status": "affected",
              "version": "6.5.15"
            },
            {
              "status": "affected",
              "version": "7.0.1"
            },
            {
              "status": "affected",
              "version": "6.6.25"
            },
            {
              "status": "affected",
              "version": "6.6.2"
            },
            {
              "status": "affected",
              "version": "6.5.1"
            },
            {
              "status": "affected",
              "version": "6.5.2"
            },
            {
              "status": "affected",
              "version": "7.1.1"
            },
            {
              "status": "affected",
              "version": "7.0.90"
            },
            {
              "status": "affected",
              "version": "6.6.3"
            },
            {
              "status": "affected",
              "version": "6.7.1"
            },
            {
              "status": "affected",
              "version": "7.0.2"
            },
            {
              "status": "affected",
              "version": "7.1.15"
            },
            {
              "status": "affected",
              "version": "7.1.2"
            },
            {
              "status": "affected",
              "version": "7.2.1"
            },
            {
              "status": "affected",
              "version": "6.7.2"
            },
            {
              "status": "affected",
              "version": "7.1.25"
            },
            {
              "status": "affected",
              "version": "6.6.4"
            },
            {
              "status": "affected",
              "version": "7.3.1"
            },
            {
              "status": "affected",
              "version": "7.1.3"
            },
            {
              "status": "affected",
              "version": "6.7.3"
            },
            {
              "status": "affected",
              "version": "7.4.1"
            },
            {
              "status": "affected",
              "version": "7.2.2"
            },
            {
              "status": "affected",
              "version": "6.8.1"
            },
            {
              "status": "affected",
              "version": "7.3.2"
            },
            {
              "status": "affected",
              "version": "7.5.1"
            },
            {
              "status": "affected",
              "version": "7.3.3"
            },
            {
              "status": "affected",
              "version": "6.8.2"
            },
            {
              "status": "affected",
              "version": "7.3.4"
            },
            {
              "status": "affected",
              "version": "7.4.2"
            },
            {
              "status": "affected",
              "version": "6.7.35"
            },
            {
              "status": "affected",
              "version": "6.9.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the Broadband Network Gateway PPP over Ethernet (PPPoE) feature of Cisco\u0026nbsp;IOS XR Software could allow an unauthenticated, adjacent attacker to cause the PPPoE process to continually crash.\r\nThis vulnerability exists because the PPPoE feature does not properly handle an error condition within a specific crafted packet sequence. An attacker could exploit this vulnerability by sending a sequence of specific PPPoE packets from controlled customer premises equipment (CPE). A successful exploit could allow the attacker to cause the PPPoE process to continually restart, resulting in a denial of service condition (DoS).Cisco\u0026nbsp;has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.This advisory is part of the September 2022 release of the Cisco\u0026nbsp;IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see ."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco\u00a0PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-391",
              "description": "Unchecked Error Condition",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-15T15:31:20.913Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-iosxr-bng-Gmg5Gxt",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt"
        }
      ],
      "source": {
        "advisory": "cisco-sa-iosxr-bng-Gmg5Gxt",
        "defects": [
          "CSCwa57311"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "Cisco IOS XR Software Broadband Network Gateway PPPoE Denial of Service Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2022-20849",
    "datePublished": "2024-11-15T15:31:20.913Z",
    "dateReserved": "2021-11-02T13:28:29.180Z",
    "dateUpdated": "2024-11-15T15:46:25.684Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.
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.

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