cve-2024-20397
Vulnerability from cvelistv5
Published
2024-12-04 16:13
Modified
2024-12-04 21:39
Summary
A vulnerability in the bootloader of Cisco NX-OS Software could allow an unauthenticated attacker with physical access to an affected device, or an authenticated, local attacker with administrative credentials, to bypass NX-OS image signature verification. This vulnerability is due to insecure bootloader settings. An attacker could exploit this vulnerability by executing a series of bootloader commands. A successful exploit could allow the attacker to bypass NX-OS image signature verification and load unverified software.
Impacted products
Vendor Product Version
Cisco Cisco NX-OS System Software in ACI Mode Version: 14.1(1j)
Version: 14.0(3d)
Version: 14.1(1k)
Version: 13.2(1m)
Version: 14.0(3c)
Version: 13.2(2l)
Version: 13.2(7k)
Version: 14.1(1l)
Version: 14.2(2f)
Version: 13.2(3s)
Version: 13.2(2o)
Version: 14.0(2c)
Version: 14.1(2m)
Version: 13.2(5e)
Version: 14.1(2o)
Version: 13.2(7f)
Version: 13.2(41d)
Version: 13.2(4d)
Version: 13.2(3o)
Version: 13.2(1l)
Version: 14.0(1h)
Version: 13.2(3n)
Version: 14.2(1l)
Version: 14.2(2e)
Version: 13.2(4e)
Version: 14.2(1i)
Version: 13.2(9b)
Version: 14.1(2s)
Version: 14.1(1i)
Version: 14.1(2g)
Version: 13.2(3j)
Version: 13.2(5d)
Version: 13.2(6i)
Version: 14.1(2u)
Version: 13.2(3i)
Version: 13.2(3r)
Version: 13.2(5f)
Version: 14.2(1j)
Version: 14.1(2w)
Version: 14.2(3n)
Version: 14.2(3l)
Version: 14.2(3j)
Version: 14.2(2g)
Version: 13.2(8d)
Version: 14.1(2x)
Version: 13.2(9f)
Version: 14.2(3q)
Version: 14.2(4i)
Version: 13.2(9h)
Version: 15.0(1k)
Version: 14.2(4k)
Version: 15.0(1l)
Version: 15.0(2e)
Version: 14.2(4o)
Version: 14.2(4p)
Version: 15.0(2h)
Version: 14.2(5k)
Version: 14.2(5l)
Version: 14.2(5n)
Version: 15.1(1h)
Version: 14.2(6d)
Version: 15.1(2e)
Version: 14.2(6g)
Version: 14.2(6h)
Version: 15.1(3e)
Version: 13.2(10e)
Version: 14.2(6l)
Version: 14.2(7f)
Version: 15.1(4c)
Version: 14.2(6o)
Version: 15.2(1g)
Version: 15.2(2e)
Version: 14.2(7l)
Version: 13.2(10f)
Version: 15.2(2f)
Version: 15.2(2g)
Version: 14.2(7q)
Version: 15.2(2h)
Version: 15.2(3f)
Version: 15.2(3e)
Version: 15.2(3g)
Version: 14.2(7r)
Version: 14.2(7s)
Version: 15.2(4d)
Version: 15.2(4e)
Version: 14.2(7t)
Version: 15.2(5c)
Version: 15.2(5d)
Version: 13.2(10g)
Version: 16.0(1g)
Version: 14.2(7u)
Version: 15.2(5e)
Version: 15.2(4f)
Version: 15.2(6e)
Version: 15.2(6h)
Version: 16.0(1j)
Version: 15.2(6g)
Version: 15.2(7f)
Version: 14.2(7v)
Version: 15.2(7g)
Version: 16.0(2h)
Version: 14.2(7w)
Version: 15.2(8d)
Version: 16.0(2j)
Version: 15.2(8e)
Version: 16.0(3d)
Version: 16.0(3e)
Version: 15.2(8f)
Version: 15.2(8g)
Version: 15.3(1d)
Version: 15.2(8h)
Version: 16.0(4c)
Version: 15.3(2a)
Version: 15.2(8i)
Version: 16.0(5h)
Version: 15.3(2b)
Version: 16.0(3g)
Version: 16.0(5j)
Version: 15.3(2c)
Version: 16.0(6c)
Version: 15.3(2d)
Version: 16.1(1f)
Version: 16.0(7e)
Version: 16.0(8e)
Cisco Cisco Unified Computing System (Managed) Version: 4.0(4c)
Version: 4.0(2b)
Version: 4.1(2a)
Version: 4.0(1a)
Version: 4.0(2a)
Version: 4.0(1b)
Version: 4.1(1c)
Version: 4.0(4a)
Version: 4.0(4b)
Version: 4.0(2e)
Version: 4.1(1a)
Version: 4.0(4d)
Version: 4.0(4h)
Version: 4.0(4g)
Version: 4.0(1d)
Version: 4.1(1e)
Version: 4.0(4f)
Version: 4.0(4e)
Version: 4.0(4i)
Version: 4.1(1d)
Version: 4.0(2d)
Version: 4.1(1b)
Version: 4.0(1c)
Version: 4.1(2b)
Version: 4.0(4k)
Version: 4.1(3a)
Version: 4.1(3b)
Version: 4.1(2c)
Version: 4.0(4l)
Version: 4.1(4a)
Version: 4.1(3c)
Version: 4.1(3d)
Version: 4.2(1c)
Version: 4.2(1d)
Version: 4.0(4m)
Version: 4.1(3e)
Version: 4.2(1f)
Version: 4.1(3f)
Version: 4.2(1i)
Version: 4.1(3h)
Version: 4.2(1k)
Version: 4.2(1l)
Version: 4.0(4n)
Version: 4.2(1m)
Version: 4.1(3i)
Version: 4.2(2a)
Version: 4.2(1n)
Version: 4.1(3j)
Version: 4.2(2c)
Version: 4.2(2d)
Version: 4.2(3b)
Version: 4.1(3k)
Version: 4.0(4o)
Version: 4.2(2e)
Version: 4.2(3d)
Version: 4.2(3e)
Version: 4.2(3g)
Version: 4.1(3l)
Version: 4.3(2b)
Version: 4.2(3h)
Version: 4.2(3i)
Version: 4.3(2c)
Version: 4.1(3m)
Version: 4.3(2e)
Version: 4.3(3a)
Version: 4.2(3j)
Version: 4.3(3c)
Version: 4.2(3k)
Version: 4.2(3l)
Version: 4.3(2f)
Version: 4.2(3m)
Show details on NVD website


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                "id": "CVE-2024-20397",
                "options": [
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                    "Exploitation": "none"
                  },
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                    "Automatable": "no"
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                  {
                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2024-12-04T19:27:41.534598Z",
                "version": "2.0.3"
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        "providerMetadata": {
          "dateUpdated": "2024-12-04T21:39:35.478Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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              "status": "affected",
              "version": "7.3(8)D1(1)"
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              "version": "8.2(7a)"
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              "status": "affected",
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              "status": "affected",
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              "version": "9.3(9)"
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              "status": "affected",
              "version": "7.3(9)D1(1)"
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              "status": "affected",
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              "status": "affected",
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            {
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              "status": "affected",
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              "status": "affected",
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              "status": "affected",
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              "status": "affected",
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the bootloader of Cisco NX-OS Software could allow an unauthenticated attacker with physical access to an affected device, or an authenticated, local attacker with administrative credentials, to bypass NX-OS image signature verification.\r\n\r\nThis vulnerability is due to insecure bootloader settings. An attacker could exploit this vulnerability by executing a series of bootloader commands. A successful exploit could allow the attacker to bypass NX-OS image signature verification and load unverified software."
        }
      ],
      "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": "PHYSICAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "Improper Access Control",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-04T16:13:13.890Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-nxos-image-sig-bypas-pQDRQvjL",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-image-sig-bypas-pQDRQvjL"
        }
      ],
      "source": {
        "advisory": "cisco-sa-nxos-image-sig-bypas-pQDRQvjL",
        "defects": [
          "CSCwm47438"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "Cisco NX-OS Software Image Verification Bypass Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2024-20397",
    "datePublished": "2024-12-04T16:13:13.890Z",
    "dateReserved": "2023-11-08T15:08:07.660Z",
    "dateUpdated": "2024-12-04T21:39:35.478Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-20397\",\"sourceIdentifier\":\"ykramarz@cisco.com\",\"published\":\"2024-12-04T17:15:11.913\",\"lastModified\":\"2024-12-04T17:15:11.913\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the bootloader of Cisco NX-OS Software could allow an unauthenticated attacker with physical access to an affected device, or an authenticated, local attacker with administrative credentials, to bypass NX-OS image signature verification.\\r\\n\\r\\nThis vulnerability is due to insecure bootloader settings. An attacker could exploit this vulnerability by executing a series of bootloader commands. A successful exploit could allow the attacker to bypass NX-OS image signature verification and load unverified software.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad en el cargador de arranque del software Cisco NX-OS podr\u00eda permitir que un atacante no autenticado con acceso f\u00edsico a un dispositivo afectado, o un atacante local autenticado con credenciales administrativas, eluda la verificaci\u00f3n de la firma de la imagen de NX-OS. Esta vulnerabilidad se debe a una configuraci\u00f3n insegura del cargador de arranque. Un atacante podr\u00eda aprovechar esta vulnerabilidad ejecutando una serie de comandos del cargador de arranque. Una explotaci\u00f3n exitosa podr\u00eda permitir al atacante eludir la verificaci\u00f3n de la firma de la imagen de NX-OS y cargar software no verificado.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"ykramarz@cisco.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N\",\"baseScore\":5.2,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"PHYSICAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":0.9,\"impactScore\":4.2}]},\"weaknesses\":[{\"source\":\"ykramarz@cisco.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-284\"}]}],\"references\":[{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-image-sig-bypas-pQDRQvjL\",\"source\":\"ykramarz@cisco.com\"}]}}"
  }
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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