Vulnerability-Lookup

CVE-2024-20406 (GCVE-0-2024-20406)

Vulnerability from cvelistv5 – Published: 2024-09-11 16:38 – Updated: 2024-09-11 20:38

Title

Cisco IOS XR Software Intermediate System-to-Intermediate System Denial of Service Vulnerability

Summary

A vulnerability in the segment routing feature for the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of ingress IS-IS packets. An attacker could exploit this vulnerability by sending specific IS-IS packets to an affected device after forming an adjacency. A successful exploit could allow the attacker to cause the IS-IS process on all affected devices that are participating in the Flexible Algorithm to crash and restart, resulting in a DoS condition. Note: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2-adjacent to the affected device and must have formed an adjacency. This vulnerability affects segment routing for IS-IS over IPv4 and IPv6 control planes as well as devices that are configured as level 1, level 2, or multi-level routing IS-IS type.

Severity

7.4 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-11 20:38 UTC

CWE

CWE-20 - Improper Input Validation

Assigner

cisco CNA under the mitre root

CNA scorecard C 66/100 over 442 records in the last 180 days details

References

1 reference

URL	Tags
https://sec.cloudapps.cisco.com/security/center/c…

Impacted products

1 product

Vendor	Product	Version	CPE status
Cisco	Cisco IOS XR Software	Affected: 7.4.1 Affected: 6.8.1 Affected: 7.4.15 Affected: 7.5.1 Affected: 7.4.16 Affected: 7.6.1 Affected: 7.5.2 Affected: 7.8.1 Affected: 7.6.15 Affected: 7.5.12 Affected: 7.7.1 Affected: 6.8.2 Affected: 7.4.2 Affected: 6.9.1 Affected: 7.6.2 Affected: 7.5.3 Affected: 7.7.2 Affected: 6.9.2 Affected: 7.9.1 Affected: 7.10.1 Affected: 7.8.2 Affected: 7.5.4 Affected: 7.8.22 Affected: 7.7.21 Affected: 7.9.2 Affected: 7.5.5 Affected: 7.11.1 Affected: 7.9.21 Affected: 7.10.2 Affected: 7.6.3	guessed

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            {
              "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": "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"
              },
              "format": "cvssV3_1"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-20",
                  "description": "Improper Input Validation",
                  "lang": "en",
                  "type": "cwe"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2024-09-11T16:38:50.133Z",
            "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
            "shortName": "cisco"
          },
          "references": [
            {
              "name": "cisco-sa-isis-xehpbVNe",
              "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-isis-xehpbVNe"
            }
          ],
          "source": {
            "advisory": "cisco-sa-isis-xehpbVNe",
            "defects": [
              "CSCwi39542"
            ],
            "discovery": "EXTERNAL"
          },
          "title": "Cisco IOS XR Software Intermediate System-to-Intermediate System Denial of Service Vulnerability"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "assignerShortName": "cisco",
        "cveId": "CVE-2024-20406",
        "datePublished": "2024-09-11T16:38:50.133Z",
        "dateReserved": "2023-11-08T15:08:07.661Z",
        "dateUpdated": "2024-09-11T20:38:41.758Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

BDU:2025-00915 (CVE-2024-20406)

Vulnerability from fstec – Published: 2025-01-31 – Updated: 2025-01-31 – View on bdu.fstec.ru Fixed

Title

Уязвимость компонента System-to-Intermediate System Protocol Handler программного обеспечения Cisco IOS XR, позволяющая нарушителю вызвать отказ в обслуживании (DoS)

Summary

Уязвимость компонента System-to-Intermediate System Protocol Handler программного обеспечения Cisco IOS XR связана с недостаточной проверкой входных данных пакетов IS-IS. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, вызвать отказ в обслуживании (DoS)

Severity

6.1 (Medium) CVSS 2.0


                      
                        AV:A/AC:L/Au:N/C:N/I:N/A:C

7.4 (High) CVSS 3.0


                      
                        CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Resource manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-20 - Недостаточная проверка вводимых данных

Aliases

CVE-2024-20406

References

2 references

URL
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/c…
https://vuldb.com/ru/?id.277225

Impacted products

1 product from 2 vendors

Vendors

Cisco Systems, Inc.

Products

Cisco IOS XR

Versions

от 6.8.1 до 7.0.0 (Cisco IOS XR), от 7.4.1 до 7.11.2 (Cisco IOS XR)

Product types

Operating system

Mitigations

Использование рекомендаций: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-xml-tcpdos-ZEXvrU2S

JSON

To clipboard

{
  "CVSS 2.0": "AV:A/AC:L/Au:N/C:N/I:N/A:C",
  "CVSS 3.0": "AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Cisco Systems, Inc.",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "\u043e\u0442 6.8.1 \u0434\u043e 7.0.0 (Cisco IOS XR), \u043e\u0442 7.4.1 \u0434\u043e 7.11.2 (Cisco IOS XR)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\nhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-xml-tcpdos-ZEXvrU2S",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "11.09.2024",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "31.01.2025",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "31.01.2025",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2025-00915",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2024-20406",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Cisco IOS XR",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": null,
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 System-to-Intermediate System Protocol Handler \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Cisco IOS XR, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438 (DoS)",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u0430\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 \u0432\u0432\u043e\u0434\u0438\u043c\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 (CWE-20)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 System-to-Intermediate System Protocol Handler \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Cisco IOS XR \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u043e\u0439 \u0432\u0445\u043e\u0434\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 IS-IS. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e, \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438 (DoS)",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u0430\u043c\u0438",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-xml-tcpdos-ZEXvrU2S\nhttps://vuldb.com/ru/?id.277225",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-20",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 6,1)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,4)"
}

CERTFR-2024-AVI-0772

Vulnerability from certfr_avis - Published: 2024-09-12 - Updated: 2024-09-12

De multiples vulnérabilités ont été découvertes dans les produits Cisco. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une élévation de privilèges et un déni de service à distance.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

Vendor	Product	Description
Cisco	Crosswork NSO	Crosswork NSO versions 6.1.x antérieures à 6.1.9
Cisco	Routed Passive Optical Network Controller	Routed Passive Optical Network Controller versions antérieures à 24.4.1
Cisco	IOS XR	IOS XR versions postérieures à 24.1.x et antérieures à 24.2.2
Cisco	Crosswork NSO	Crosswork NSO versions 6.2.x antérieures à 6.2.3
Cisco	IOS XR	IOS XR versions 24.4.x antérieures à 24.4.1
Cisco	Crosswork NSO	Crosswork NSO versions 5.8.x antérieures à 5.8.13.1
Cisco	ConfD	ConfD versions 7.7.x antérieures à 7.7.16
Cisco	Crosswork NSO	Crosswork NSO versions 5.5.x antérieures à 5.5.10.1
Cisco	ConfD	ConfD versions 7.5.x antérieures à 7.5.10.2
Cisco	Crosswork NSO	Crosswork NSO versions 6.0.x antérieures à 6.0.13
Cisco	Crosswork NSO	Crosswork NSO versions 5.7.x antérieures à 5.7.16
Cisco	IOS XR	IOS XR versions postérieures à 7.10.x antérieures à 7.11.21
Cisco	Crosswork NSO	Crosswork NSO versions 5.6.x antérieures à 5.6.14.3
Cisco	ConfD	ConfD versions 8.0.x antérieures à 8.0.13
Cisco	Optical Site Manager	Optical Site Manager versions antérieures à 24.3.1

References

Title

Publication Time

CISCO-SA-ISIS-XEHPBVNE

Vulnerability from csaf_cisco - Published: 2024-09-11 16:00 - Updated: 2024-09-11 16:00

Summary

Cisco IOS XR Software Segment Routing for Intermediate System-to-Intermediate System Denial of Service Vulnerability

Scope

1 vulnerability in this advisory, including CVE-2024-20406.

CVE-2024-20406

7.4 (High)


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

Known affected: 1 product

https://software.cisco.com

Open the full advisory

FKIE_CVE-2024-20406

Vulnerability from fkie_nvd - Published: 2024-09-11 17:15 - Updated: 2026-06-17 07:06

Severity

7.4 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
7.4 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Summary

References

	URL	Tags
	psirt@cisco.com	https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-isis-xehpbVNe	Vendor Advisory

Impacted products

	Vendor	Product	Version
	cisco	ios_xr	*
	cisco	ios_xr	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "Cisco IOS XR Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "7.4.1"
            },
            {
              "status": "affected",
              "version": "6.8.1"
            },
            {
              "status": "affected",
              "version": "7.4.15"
            },
            {
              "status": "affected",
              "version": "7.5.1"
            },
            {
              "status": "affected",
              "version": "7.4.16"
            },
            {
              "status": "affected",
              "version": "7.6.1"
            },
            {
              "status": "affected",
              "version": "7.5.2"
            },
            {
              "status": "affected",
              "version": "7.8.1"
            },
            {
              "status": "affected",
              "version": "7.6.15"
            },
            {
              "status": "affected",
              "version": "7.5.12"
            },
            {
              "status": "affected",
              "version": "7.7.1"
            },
            {
              "status": "affected",
              "version": "6.8.2"
            },
            {
              "status": "affected",
              "version": "7.4.2"
            },
            {
              "status": "affected",
              "version": "6.9.1"
            },
            {
              "status": "affected",
              "version": "7.6.2"
            },
            {
              "status": "affected",
              "version": "7.5.3"
            },
            {
              "status": "affected",
              "version": "7.7.2"
            },
            {
              "status": "affected",
              "version": "6.9.2"
            },
            {
              "status": "affected",
              "version": "7.9.1"
            },
            {
              "status": "affected",
              "version": "7.10.1"
            },
            {
              "status": "affected",
              "version": "7.8.2"
            },
            {
              "status": "affected",
              "version": "7.5.4"
            },
            {
              "status": "affected",
              "version": "7.8.22"
            },
            {
              "status": "affected",
              "version": "7.7.21"
            },
            {
              "status": "affected",
              "version": "7.9.2"
            },
            {
              "status": "affected",
              "version": "7.5.5"
            },
            {
              "status": "affected",
              "version": "7.11.1"
            },
            {
              "status": "affected",
              "version": "7.9.21"
            },
            {
              "status": "affected",
              "version": "7.10.2"
            },
            {
              "status": "affected",
              "version": "7.6.3"
            }
          ]
        }
      ],
      "source": "psirt@cisco.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A21D4B88-10AE-4726-9D00-48CF36068409",
              "versionEndExcluding": "7.0.0",
              "versionStartIncluding": "6.8.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6BB02B4B-AC47-4DFF-BB0F-AD0F2D12866B",
              "versionEndExcluding": "7.11.2",
              "versionStartIncluding": "7.4.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the segment routing feature for the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to insufficient input validation of ingress IS-IS packets. An attacker could exploit this vulnerability by sending specific IS-IS packets to an affected device after forming an adjacency. A successful exploit could allow the attacker to cause the IS-IS process on all affected devices that are participating in the Flexible Algorithm to crash and restart, resulting in a DoS condition.\r\nNote: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2-adjacent to the affected device and must have formed an adjacency. This vulnerability affects segment routing for IS-IS over IPv4 and IPv6 control planes as well as devices that are configured as level 1, level 2, or multi-level routing IS-IS type."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en la funci\u00f3n de enrutamiento de segmentos para el protocolo de sistema intermedio a sistema intermedio (IS-IS) del software Cisco IOS XR podr\u00eda permitir que un atacante adyacente no autenticado provoque una condici\u00f3n de denegaci\u00f3n de servicio (DoS) en un dispositivo afectado. Esta vulnerabilidad se debe a una validaci\u00f3n de entrada insuficiente de los paquetes IS-IS de entrada. Un atacante podr\u00eda aprovechar esta vulnerabilidad enviando paquetes IS-IS espec\u00edficos a un dispositivo afectado despu\u00e9s de formar una adyacencia. Una explotaci\u00f3n exitosa podr\u00eda permitir que el atacante provoque que el proceso IS-IS en todos los dispositivos afectados que participan en el algoritmo flexible se bloquee y se reinicie, lo que da como resultado una condici\u00f3n de DoS. Nota: El protocolo IS-IS es un protocolo de enrutamiento. Para aprovechar esta vulnerabilidad, un atacante debe estar adyacente a la capa 2 del dispositivo afectado y debe haber formado una adyacencia. Esta vulnerabilidad afecta al enrutamiento de segmentos para IS-IS sobre planos de control IPv4 e IPv6, as\u00ed como a dispositivos que est\u00e1n configurados como tipo IS-IS de enrutamiento de nivel 1, nivel 2 o multinivel."
    }
  ],
  "id": "CVE-2024-20406",
  "lastModified": "2026-06-17T07:06:57.617",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.0,
        "source": "psirt@cisco.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-20406",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-11T20:38:32.503942Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-09-11T17:15:13.040",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-isis-xehpbVNe"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-7474-CQC3-4G2P

Vulnerability from github – Published: 2024-09-11 18:31 – Updated: 2024-09-11 18:31

Details

This vulnerability is due to insufficient input validation of ingress IS-IS packets. An attacker could exploit this vulnerability by sending specific IS-IS packets to an affected device after forming an adjacency. A successful exploit could allow the attacker to cause the IS-IS process on all affected devices that are participating in the Flexible Algorithm to crash and restart, resulting in a DoS condition. Note: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2-adjacent to the affected device and must have formed an adjacency. This vulnerability affects segment routing for IS-IS over IPv4 and IPv6 control planes as well as devices that are configured as level 1, level 2, or multi-level routing IS-IS type.

Severity

7.4 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2024-20406"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-11T17:15:13Z",
    "severity": "HIGH"
  },
  "details": "A vulnerability in the segment routing feature for the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.\n\nThis vulnerability is due to insufficient input validation of ingress IS-IS packets. An attacker could exploit this vulnerability by sending specific IS-IS packets to an affected device after forming an adjacency. A successful exploit could allow the attacker to cause the IS-IS process on all affected devices that are participating in the Flexible Algorithm to crash and restart, resulting in a DoS condition.\nNote: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2-adjacent to the affected device and must have formed an adjacency. This vulnerability affects segment routing for IS-IS over IPv4 and IPv6 control planes as well as devices that are configured as level 1, level 2, or multi-level routing IS-IS type.",
  "id": "GHSA-7474-cqc3-4g2p",
  "modified": "2024-09-11T18:31:08Z",
  "published": "2024-09-11T18:31:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-20406"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-isis-xehpbVNe"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GSD-2024-20406

Vulnerability from gsd - Updated: 2023-12-13 01:21

Details

** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.

Aliases

CVE-2024-20406

Aliases

CVE-2024-20406

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2024-20406",
    "id": "GSD-2024-20406"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2024-20406"
      ],
      "id": "GSD-2024-20406",
      "modified": "2023-12-13T01:21:43.133627Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2024-20406",
        "STATE": "RESERVED"
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided."
          }
        ]
      }
    }
  }
}

NCSC-2024-0371

Vulnerability from csaf_ncscnl - Published: 2024-09-13 08:40 - Updated: 2024-09-13 08:40

Summary

Kwetsbaarheden verholpen in Cisco IOS XR

Scope

4 vulnerabilities in this advisory, including CVE-2024-20406.

CVE-2024-20406

7.4 (High)


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

Known affected: 1 product

Open the full advisory

WID-SEC-W-2024-2125

Vulnerability from csaf_certbund - Published: 2024-09-11 22:00 - Updated: 2024-09-11 22:00

Summary

Cisco IOS XR: Mehrere Schwachstellen

Severity

Hoch

Scope

6 vulnerabilities in this advisory, including CVE-2024-20406.

CVE-2024-20406

Es besteht eine Schwachstelle in Cisco IOS XR. Dieser Fehler ist auf eine unzureichende Validierung eingehender IS-IS-Pakete zurückzuführen, was zu Prozessunterbrechungen führt. Ein Angreifer aus einem angrenzenden Netzwerk kann diese Schwachstelle ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen.

Known affected: 3 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2024-20406 (GCVE-0-2024-20406)

BDU:2025-00915 (CVE-2024-20406)

CERTFR-2024-AVI-0772

Solutions

CISCO-SA-ISIS-XEHPBVNE

FKIE_CVE-2024-20406

GHSA-7474-CQC3-4G2P

GSD-2024-20406

NCSC-2024-0371

WID-SEC-W-2024-2125

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour