CVE-2023-20049 (GCVE-0-2023-20049)

Vulnerability from cvelistv5 – Published: 2023-03-09 00:00 – Updated: 2024-10-28 16:33
VLAI?
Summary
A vulnerability in the bidirectional forwarding detection (BFD) hardware offload feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of malformed BFD packets that are received on line cards where the BFD hardware offload feature is enabled. An attacker could exploit this vulnerability by sending a crafted IPv4 BFD packet to an affected device. A successful exploit could allow the attacker to cause line card exceptions or a hard reset, resulting in loss of traffic over that line card while the line card reloads.
Severity ?
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Cisco Cisco IOS XR Software Affected: n/a
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T08:57:35.607Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "20230308 Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bfd-XmRescbT"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-20049",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-28T16:24:40.994516Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-28T16:33:14.713Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco IOS XR Software ",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2023-03-08T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the bidirectional forwarding detection (BFD) hardware offload feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of malformed BFD packets that are received on line cards where the BFD hardware offload feature is enabled. An attacker could exploit this vulnerability by sending a crafted IPv4 BFD packet to an affected device. A successful exploit could allow the attacker to cause line card exceptions or a hard reset, resulting in loss of traffic over that line card while the line card reloads."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco 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": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-805",
              "description": "CWE-805",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-03-09T00:00:00",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "20230308 Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bfd-XmRescbT"
        }
      ],
      "source": {
        "advisory": "cisco-sa-bfd-XmRescbT",
        "defect": [
          [
            "CSCwc39336"
          ]
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2023-20049",
    "datePublished": "2023-03-09T00:00:00",
    "dateReserved": "2022-10-27T00:00:00",
    "dateUpdated": "2024-10-28T16:33:14.713Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "fkie_nvd": {
      "configurations": "[{\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"7.5.3\", \"matchCriteriaId\": \"873225C3-D2D1-41C0-9C75-016E53A7BBEB\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"7.6\", \"versionEndExcluding\": \"7.6.2\", \"matchCriteriaId\": \"864E90A6-B93D-4213-85D8-A2D847848A9E\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:cisco:ios_xr:7.7:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"0C8039EF-44D6-4C19-A3B3-37B75FB8D640\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:cisco:asr_9000v-v2:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"DB91BE23-C710-473F-8E43-0E0DE760F8AD\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"324C97E6-1810-404F-9F45-6240F99FF039\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"57EB55BB-41B7-40A1-B6F5-142FE8AB4C16\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"433F4A82-04A4-4EAA-8C19-F7581DCD8D29\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"2D5E60AB-94FF-448A-89D8-5D2197E21C74\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:cisco:asr_9902:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"91474DBC-FB31-4DDF-96C5-311FA1D53A74\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:cisco:asr_9903:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"FA241214-2F05-4360-9B50-385355E29CF4\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"A93212A4-50AB-42E7-89A4-5FBBAEA050C3\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"EDA53A61-98B3-458C-8893-61CD7D6B1E48\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"F396564E-B477-4A27-A189-CEB737552E25\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"5445CC54-ACFB-4070-AF26-F91FEAA85181\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"D7AA58E5-D7E1-48CF-93FF-C60EB85B2BC7\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"A vulnerability in the bidirectional forwarding detection (BFD) hardware offload feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of malformed BFD packets that are received on line cards where the BFD hardware offload feature is enabled. An attacker could exploit this vulnerability by sending a crafted IPv4 BFD packet to an affected device. A successful exploit could allow the attacker to cause line card exceptions or a hard reset, resulting in loss of traffic over that line card while the line card reloads.\"}]",
      "id": "CVE-2023-20049",
      "lastModified": "2024-11-21T07:40:26.213",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"ykramarz@cisco.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H\", \"baseScore\": 8.6, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"CHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 4.0}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 7.5, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 3.6}]}",
      "published": "2023-03-09T22:15:52.200",
      "references": "[{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bfd-XmRescbT\", \"source\": \"ykramarz@cisco.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bfd-XmRescbT\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}]",
      "sourceIdentifier": "ykramarz@cisco.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"ykramarz@cisco.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-805\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-119\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-20049\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2023-03-09T22:15:52.200\",\"lastModified\":\"2024-11-21T07:40:26.213\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the bidirectional forwarding detection (BFD) hardware offload feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of malformed BFD packets that are received on line cards where the BFD hardware offload feature is enabled. An attacker could exploit this vulnerability by sending a crafted IPv4 BFD packet to an affected device. A successful exploit could allow the attacker to cause line card exceptions or a hard reset, resulting in loss of traffic over that line card while the line card reloads.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H\",\"baseScore\":8.6,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":4.0},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-805\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-119\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"7.5.3\",\"matchCriteriaId\":\"873225C3-D2D1-41C0-9C75-016E53A7BBEB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"7.6\",\"versionEndExcluding\":\"7.6.2\",\"matchCriteriaId\":\"864E90A6-B93D-4213-85D8-A2D847848A9E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:ios_xr:7.7:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0C8039EF-44D6-4C19-A3B3-37B75FB8D640\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_9000v-v2:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DB91BE23-C710-473F-8E43-0E0DE760F8AD\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"324C97E6-1810-404F-9F45-6240F99FF039\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"57EB55BB-41B7-40A1-B6F5-142FE8AB4C16\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"433F4A82-04A4-4EAA-8C19-F7581DCD8D29\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"2D5E60AB-94FF-448A-89D8-5D2197E21C74\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_9902:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"91474DBC-FB31-4DDF-96C5-311FA1D53A74\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_9903:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FA241214-2F05-4360-9B50-385355E29CF4\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A93212A4-50AB-42E7-89A4-5FBBAEA050C3\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"EDA53A61-98B3-458C-8893-61CD7D6B1E48\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F396564E-B477-4A27-A189-CEB737552E25\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5445CC54-ACFB-4070-AF26-F91FEAA85181\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D7AA58E5-D7E1-48CF-93FF-C60EB85B2BC7\"}]}]}],\"references\":[{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bfd-XmRescbT\",\"source\":\"psirt@cisco.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bfd-XmRescbT\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bfd-XmRescbT\", \"name\": \"20230308 Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T08:57:35.607Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-20049\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-28T16:24:40.994516Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-28T16:26:00.825Z\"}}], \"cna\": {\"title\": \"Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability\", \"source\": {\"defect\": [[\"CSCwc39336\"]], \"advisory\": \"cisco-sa-bfd-XmRescbT\", \"discovery\": \"INTERNAL\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 8.6, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/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 XR Software \", \"versions\": [{\"status\": \"affected\", \"version\": \"n/a\"}]}], \"exploits\": [{\"lang\": \"en\", \"value\": \"The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. \"}], \"datePublic\": \"2023-03-08T00:00:00\", \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bfd-XmRescbT\", \"name\": \"20230308 Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability\", \"tags\": [\"vendor-advisory\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability in the bidirectional forwarding detection (BFD) hardware offload feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of malformed BFD packets that are received on line cards where the BFD hardware offload feature is enabled. An attacker could exploit this vulnerability by sending a crafted IPv4 BFD packet to an affected device. A successful exploit could allow the attacker to cause line card exceptions or a hard reset, resulting in loss of traffic over that line card while the line card reloads.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-805\", \"description\": \"CWE-805\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2023-03-09T00:00:00\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-20049\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-10-28T16:33:14.713Z\", \"dateReserved\": \"2022-10-27T00:00:00\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2023-03-09T00:00:00\", \"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 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.