Vulnerability-Lookup

BDU:2023-06305 (CVE-2023-20227)

Vulnerability from fstec – Published: 2023-10-05 – Updated: 2023-10-05 – View on bdu.fstec.ru Fixed

Title

Уязвимость реализации протокола Layer 2 Tunneling Protocol (L2TP) операционной системы Cisco IOS XE, позволяющая нарушителю вызвать отказ в обслуживании

Summary

Уязвимость реализации протокола Layer 2 Tunneling Protocol (L2TP) операционной системы Cisco IOS XE связана с некорректной зачисткой или освобождением ресурсов. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, вызвать отказ в обслуживании

Severity

7.8 (High) CVSS 2.0


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

8.6 (High) CVSS 3.0


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

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Resource exhaustion

Incidents

Being clarified

Remediation

Software update

CWE

CWE-404 - Некорректная зачистка или освобождение ресурсов

Aliases

CVE-2023-20227

References

2 references

URL
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/c…
https://vuldb.com/ru/?id.240721

Impacted products

1 product from 2 vendors

Vendors

Cisco Systems, Inc.

Products

Cisco IOS XE

Versions

- (Cisco IOS XE)

Product types

Operating system, Network appliance software

Platforms

Cisco Systems, Inc. Cisco IOS XE - Cisco 1100 Integrated Services Routers, Inc. Cisco IOS XE - 4000 Series ISRs, Inc. Cisco IOS XE - Catalyst 8000V Edge, Inc. Cisco IOS XE - Catalyst 8200 Series Edge, Inc. Cisco IOS XE - Catalyst 8300 Series Edge, Inc. Cisco IOS XE - Catalyst 8500L Series, Inc. Cisco IOS XE - 1000 Series Integrated Services Routers, Inc. Cisco IOS XE - Cisco Cloud Services Router (CSR) 1000V Series, Inc. Cisco IOS XE - Integrated Services Virtual Routers, Inc. Cisco IOS XE - VG400 Analog Voice Gateways, Inc. Cisco IOS XE - VG420 Analog Voice Gateways, Inc. Cisco IOS XE - VG450 Analog Voice Gateways

Mitigations

Использование рекомендаций производителя: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-l2tp-dos-eB5tuFmV

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
  "CVSS 3.0": "AV:N/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": "- (Cisco IOS XE)",
  "\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 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f:\nhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-l2tp-dos-eB5tuFmV",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "27.08.2023",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "05.10.2023",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "05.10.2023",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2023-06305",
  "\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-2023-20227",
  "\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 XE",
  "\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": "Cisco Systems, Inc. Cisco IOS XE - Cisco 1100 Integrated Services Routers, Cisco Systems, Inc. Cisco IOS XE - 4000 Series ISRs, Cisco Systems, Inc. Cisco IOS XE - Catalyst 8000V Edge, Cisco Systems, Inc. Cisco IOS XE - Catalyst 8200 Series Edge, Cisco Systems, Inc. Cisco IOS XE - Catalyst 8300 Series Edge, Cisco Systems, Inc. Cisco IOS XE - Catalyst 8500L Series, Cisco Systems, Inc. Cisco IOS XE - 1000 Series Integrated Services Routers, Cisco Systems, Inc. Cisco IOS XE - Cisco Cloud Services Router (CSR) 1000V Series, Cisco Systems, Inc. Cisco IOS XE - Integrated Services Virtual Routers, Cisco Systems, Inc. Cisco IOS XE - VG400 Analog Voice Gateways, Cisco Systems, Inc. Cisco IOS XE - VG420 Analog Voice Gateways, Cisco Systems, Inc. Cisco IOS XE - VG450 Analog Voice Gateways",
  "\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 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 Layer 2 Tunneling Protocol (L2TP) \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Cisco IOS XE, \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",
  "\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\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u0430\u044f \u0437\u0430\u0447\u0438\u0441\u0442\u043a\u0430 \u0438\u043b\u0438 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0435\u043d\u0438\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 (CWE-404)",
  "\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 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 Layer 2 Tunneling Protocol (L2TP) \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Cisco IOS XE \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0439 \u0437\u0430\u0447\u0438\u0441\u0442\u043a\u043e\u0439 \u0438\u043b\u0438 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0435\u043d\u0438\u0435\u043c \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432. \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",
  "\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": "\u0418\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432",
  "\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-ios-xe-l2tp-dos-eB5tuFmV\nhttps://vuldb.com/ru/?id.240721",
  "\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, \u041f\u041e \u0441\u0435\u0442\u0435\u0432\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e-\u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-404",
  "\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": "\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 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,8)\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 8,6)"
}

CVE-2023-20227 (GCVE-0-2023-20227)

Vulnerability from cvelistv5 – Published: 2023-09-27 17:21 – Updated: 2024-08-02 09:05

Summary

A vulnerability in the Layer 2 Tunneling Protocol (L2TP) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of certain L2TP packets. An attacker could exploit this vulnerability by sending crafted L2TP packets to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition. Note: Only traffic directed to the affected system can be used to exploit this vulnerability.

Severity

8.6 (High)


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

CWE

CWE-388 - Error Handling

Assigner

cisco mitre root

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco IOS XE Software	Affected: 16.8.1 Affected: 16.8.1a Affected: 16.8.1b Affected: 16.8.1s Affected: 16.8.1c Affected: 16.8.1d Affected: 16.8.2 Affected: 16.8.1e Affected: 16.8.3 Affected: 16.9.1 Affected: 16.9.2 Affected: 16.9.1a Affected: 16.9.1b Affected: 16.9.1s Affected: 16.9.3 Affected: 16.9.4 Affected: 16.9.5 Affected: 16.9.5f Affected: 16.9.6 Affected: 16.9.7 Affected: 16.9.8 Affected: 16.10.1 Affected: 16.10.1a Affected: 16.10.1b Affected: 16.10.1s Affected: 16.10.1c Affected: 16.10.1e Affected: 16.10.1d Affected: 16.10.2 Affected: 16.10.1f Affected: 16.10.1g Affected: 16.10.3 Affected: 16.11.1 Affected: 16.11.1a Affected: 16.11.1b Affected: 16.11.2 Affected: 16.11.1s Affected: 16.12.1 Affected: 16.12.1s Affected: 16.12.1a Affected: 16.12.1c Affected: 16.12.1w Affected: 16.12.2 Affected: 16.12.1y Affected: 16.12.2a Affected: 16.12.3 Affected: 16.12.8 Affected: 16.12.2s Affected: 16.12.1x Affected: 16.12.1t Affected: 16.12.4 Affected: 16.12.3s Affected: 16.12.4a Affected: 16.12.5 Affected: 16.12.6 Affected: 16.12.1z1 Affected: 16.12.5a Affected: 16.12.1z2 Affected: 16.12.6a Affected: 16.12.7 Affected: 16.12.10a Affected: 17.1.1 Affected: 17.1.1a Affected: 17.1.1s Affected: 17.1.1t Affected: 17.1.3 Affected: 17.2.1 Affected: 17.2.1r Affected: 17.2.1a Affected: 17.2.1v Affected: 17.2.2 Affected: 17.2.3 Affected: 17.3.1 Affected: 17.3.2 Affected: 17.3.3 Affected: 17.3.1a Affected: 17.3.1w Affected: 17.3.2a Affected: 17.3.1x Affected: 17.3.1z Affected: 17.3.4 Affected: 17.3.5 Affected: 17.3.4a Affected: 17.3.6 Affected: 17.3.4c Affected: 17.3.5a Affected: 17.3.5b Affected: 17.3.7 Affected: 17.4.1 Affected: 17.4.2 Affected: 17.4.1a Affected: 17.4.1b Affected: 17.4.2a Affected: 17.5.1 Affected: 17.5.1a Affected: 17.5.1b Affected: 17.5.1c

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T09:05:35.876Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "cisco-sa-ios-xe-l2tp-dos-eB5tuFmV",
            "tags": [
              "x_transferred"
            ],
            "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-l2tp-dos-eB5tuFmV"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco IOS XE Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "16.8.1"
            },
            {
              "status": "affected",
              "version": "16.8.1a"
            },
            {
              "status": "affected",
              "version": "16.8.1b"
            },
            {
              "status": "affected",
              "version": "16.8.1s"
            },
            {
              "status": "affected",
              "version": "16.8.1c"
            },
            {
              "status": "affected",
              "version": "16.8.1d"
            },
            {
              "status": "affected",
              "version": "16.8.2"
            },
            {
              "status": "affected",
              "version": "16.8.1e"
            },
            {
              "status": "affected",
              "version": "16.8.3"
            },
            {
              "status": "affected",
              "version": "16.9.1"
            },
            {
              "status": "affected",
              "version": "16.9.2"
            },
            {
              "status": "affected",
              "version": "16.9.1a"
            },
            {
              "status": "affected",
              "version": "16.9.1b"
            },
            {
              "status": "affected",
              "version": "16.9.1s"
            },
            {
              "status": "affected",
              "version": "16.9.3"
            },
            {
              "status": "affected",
              "version": "16.9.4"
            },
            {
              "status": "affected",
              "version": "16.9.5"
            },
            {
              "status": "affected",
              "version": "16.9.5f"
            },
            {
              "status": "affected",
              "version": "16.9.6"
            },
            {
              "status": "affected",
              "version": "16.9.7"
            },
            {
              "status": "affected",
              "version": "16.9.8"
            },
            {
              "status": "affected",
              "version": "16.10.1"
            },
            {
              "status": "affected",
              "version": "16.10.1a"
            },
            {
              "status": "affected",
              "version": "16.10.1b"
            },
            {
              "status": "affected",
              "version": "16.10.1s"
            },
            {
              "status": "affected",
              "version": "16.10.1c"
            },
            {
              "status": "affected",
              "version": "16.10.1e"
            },
            {
              "status": "affected",
              "version": "16.10.1d"
            },
            {
              "status": "affected",
              "version": "16.10.2"
            },
            {
              "status": "affected",
              "version": "16.10.1f"
            },
            {
              "status": "affected",
              "version": "16.10.1g"
            },
            {
              "status": "affected",
              "version": "16.10.3"
            },
            {
              "status": "affected",
              "version": "16.11.1"
            },
            {
              "status": "affected",
              "version": "16.11.1a"
            },
            {
              "status": "affected",
              "version": "16.11.1b"
            },
            {
              "status": "affected",
              "version": "16.11.2"
            },
            {
              "status": "affected",
              "version": "16.11.1s"
            },
            {
              "status": "affected",
              "version": "16.12.1"
            },
            {
              "status": "affected",
              "version": "16.12.1s"
            },
            {
              "status": "affected",
              "version": "16.12.1a"
            },
            {
              "status": "affected",
              "version": "16.12.1c"
            },
            {
              "status": "affected",
              "version": "16.12.1w"
            },
            {
              "status": "affected",
              "version": "16.12.2"
            },
            {
              "status": "affected",
              "version": "16.12.1y"
            },
            {
              "status": "affected",
              "version": "16.12.2a"
            },
            {
              "status": "affected",
              "version": "16.12.3"
            },
            {
              "status": "affected",
              "version": "16.12.8"
            },
            {
              "status": "affected",
              "version": "16.12.2s"
            },
            {
              "status": "affected",
              "version": "16.12.1x"
            },
            {
              "status": "affected",
              "version": "16.12.1t"
            },
            {
              "status": "affected",
              "version": "16.12.4"
            },
            {
              "status": "affected",
              "version": "16.12.3s"
            },
            {
              "status": "affected",
              "version": "16.12.4a"
            },
            {
              "status": "affected",
              "version": "16.12.5"
            },
            {
              "status": "affected",
              "version": "16.12.6"
            },
            {
              "status": "affected",
              "version": "16.12.1z1"
            },
            {
              "status": "affected",
              "version": "16.12.5a"
            },
            {
              "status": "affected",
              "version": "16.12.1z2"
            },
            {
              "status": "affected",
              "version": "16.12.6a"
            },
            {
              "status": "affected",
              "version": "16.12.7"
            },
            {
              "status": "affected",
              "version": "16.12.10a"
            },
            {
              "status": "affected",
              "version": "17.1.1"
            },
            {
              "status": "affected",
              "version": "17.1.1a"
            },
            {
              "status": "affected",
              "version": "17.1.1s"
            },
            {
              "status": "affected",
              "version": "17.1.1t"
            },
            {
              "status": "affected",
              "version": "17.1.3"
            },
            {
              "status": "affected",
              "version": "17.2.1"
            },
            {
              "status": "affected",
              "version": "17.2.1r"
            },
            {
              "status": "affected",
              "version": "17.2.1a"
            },
            {
              "status": "affected",
              "version": "17.2.1v"
            },
            {
              "status": "affected",
              "version": "17.2.2"
            },
            {
              "status": "affected",
              "version": "17.2.3"
            },
            {
              "status": "affected",
              "version": "17.3.1"
            },
            {
              "status": "affected",
              "version": "17.3.2"
            },
            {
              "status": "affected",
              "version": "17.3.3"
            },
            {
              "status": "affected",
              "version": "17.3.1a"
            },
            {
              "status": "affected",
              "version": "17.3.1w"
            },
            {
              "status": "affected",
              "version": "17.3.2a"
            },
            {
              "status": "affected",
              "version": "17.3.1x"
            },
            {
              "status": "affected",
              "version": "17.3.1z"
            },
            {
              "status": "affected",
              "version": "17.3.4"
            },
            {
              "status": "affected",
              "version": "17.3.5"
            },
            {
              "status": "affected",
              "version": "17.3.4a"
            },
            {
              "status": "affected",
              "version": "17.3.6"
            },
            {
              "status": "affected",
              "version": "17.3.4c"
            },
            {
              "status": "affected",
              "version": "17.3.5a"
            },
            {
              "status": "affected",
              "version": "17.3.5b"
            },
            {
              "status": "affected",
              "version": "17.3.7"
            },
            {
              "status": "affected",
              "version": "17.4.1"
            },
            {
              "status": "affected",
              "version": "17.4.2"
            },
            {
              "status": "affected",
              "version": "17.4.1a"
            },
            {
              "status": "affected",
              "version": "17.4.1b"
            },
            {
              "status": "affected",
              "version": "17.4.2a"
            },
            {
              "status": "affected",
              "version": "17.5.1"
            },
            {
              "status": "affected",
              "version": "17.5.1a"
            },
            {
              "status": "affected",
              "version": "17.5.1b"
            },
            {
              "status": "affected",
              "version": "17.5.1c"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the Layer 2 Tunneling Protocol (L2TP) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r This vulnerability is due to improper handling of certain L2TP packets. An attacker could exploit this vulnerability by sending crafted L2TP packets to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition.\r\n\r Note: Only traffic directed to the affected system can be used to exploit this vulnerability."
        }
      ],
      "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": "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"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-388",
              "description": "Error Handling",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-01-25T16:58:25.292Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-ios-xe-l2tp-dos-eB5tuFmV",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-l2tp-dos-eB5tuFmV"
        }
      ],
      "source": {
        "advisory": "cisco-sa-ios-xe-l2tp-dos-eB5tuFmV",
        "defects": [
          "CSCwe70596"
        ],
        "discovery": "EXTERNAL"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2023-20227",
    "datePublished": "2023-09-27T17:21:38.623Z",
    "dateReserved": "2022-10-27T18:47:50.369Z",
    "dateUpdated": "2024-08-02T09:05:35.876Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Detection rules are retrieved from Rulezet.

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

BDU:2023-06305 (CVE-2023-20227)

CVE-2023-20227 (GCVE-0-2023-20227)

Tags

Sightings

Nomenclature

Related by attack behaviour