github - ghsa-638h-mp9x-p4wm

ghsa-638h-mp9x-p4wm

Vulnerability from github

Published

2022-05-24 17:07

Modified

2022-05-24 17:07

Details

A vulnerability in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of a BGP update message that contains crafted EVPN attributes. An attacker could indirectly exploit the vulnerability by sending BGP EVPN update messages with a specific, malformed attribute to an affected system and waiting for a user on the device to display the EVPN operational routes’ status. If successful, the attacker could cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. To exploit this vulnerability, the malicious BGP update message would need to come from a configured, valid BGP peer, or would need to be injected by the attacker into the victim's BGP network on an existing, valid TCP connection to a BGP peer.

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{
  "affected": [],
  "aliases": [
    "CVE-2019-16018"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-01-26T05:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of a BGP update message that contains crafted EVPN attributes. An attacker could indirectly exploit the vulnerability by sending BGP EVPN update messages with a specific, malformed attribute to an affected system and waiting for a user on the device to display the EVPN operational routes\u0026rsquo; status. If successful, the attacker could cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. To exploit this vulnerability, the malicious BGP update message would need to come from a configured, valid BGP peer, or would need to be injected by the attacker into the victim\u0027s BGP network on an existing, valid TCP connection to a BGP peer.",
  "id": "GHSA-638h-mp9x-p4wm",
  "modified": "2022-05-24T17:07:21Z",
  "published": "2022-05-24T17:07:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-16018"
    },
    {
      "type": "WEB",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-ios-xr-routes"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

cve-2019-16018

Vulnerability from cvelistv5

Published

2020-01-26 04:30

Modified

2024-11-15 17:46

Severity ?

7.4 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H

Summary

Cisco IOS XR Software EVPN Operational Routes Denial of Service Vulnerability

References

▼	URL	Tags
	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-ios-xr-routes	vendor-advisory, x_refsource_CISCO

Impacted products

Vendor

Product

Version

▼

Cisco

Cisco IOS XR Software

Version: unspecified < n/a

Show details on NVD website

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{
  "containers": {
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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T01:03:32.796Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "20200122 Cisco IOS XR Software EVPN Operational Routes Denial of Service Vulnerability",
            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-ios-xr-routes"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2019-16018",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-15T16:30:06.960997Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco IOS XR Software",
          "vendor": "Cisco",
          "versions": [
            {
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              "status": "affected",
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            }
          ]
        }
      ],
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      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of a BGP update message that contains crafted EVPN attributes. An attacker could indirectly exploit the vulnerability by sending BGP EVPN update messages with a specific, malformed attribute to an affected system and waiting for a user on the device to display the EVPN operational routes\u0026rsquo; status. If successful, the attacker could cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. To exploit this vulnerability, the malicious BGP update message would need to come from a configured, valid BGP peer, or would need to be injected by the attacker into the victim\u0027s BGP network on an existing, valid TCP connection to a BGP peer."
        }
      ],
      "exploits": [
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          "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."
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      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H",
            "version": "3.0"
          }
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      ],
      "providerMetadata": {
        "dateUpdated": "2020-01-26T04:30:47",
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      },
      "references": [
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          ],
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        }
      ],
      "source": {
        "advisory": "cisco-sa-20200122-ios-xr-routes",
        "defect": [
          [
            "CSCvr74902"
          ]
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco IOS XR Software EVPN Operational Routes Denial of Service Vulnerability",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@cisco.com",
          "DATE_PUBLIC": "2020-01-22T16:00:00-0800",
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          "STATE": "PUBLIC",
          "TITLE": "Cisco IOS XR Software EVPN Operational Routes Denial of Service Vulnerability"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
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                      "product_name": "Cisco IOS XR Software",
                      "version": {
                        "version_data": [
                          {
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                            "version_affected": "\u003c",
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Cisco"
              }
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            }
          ]
        },
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  },
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}

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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