GSD-2019-1736

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface (UEFI) Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to improper validation of the server firmware upgrade images. An attacker could exploit this vulnerability by installing a server firmware version that would allow the attacker to disable UEFI Secure Boot. A successful exploit could allow the attacker to bypass the signature validation checks that are done by UEFI Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco.
Aliases
Aliases
CVE-2019-1736
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{
  "GSD": {
    "alias": "CVE-2019-1736",
    "description": "A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface (UEFI) Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to improper validation of the server firmware upgrade images. An attacker could exploit this vulnerability by installing a server firmware version that would allow the attacker to disable UEFI Secure Boot. A successful exploit could allow the attacker to bypass the signature validation checks that are done by UEFI Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco.",
    "id": "GSD-2019-1736"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2019-1736"
      ],
      "details": "A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface (UEFI) Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to improper validation of the server firmware upgrade images. An attacker could exploit this vulnerability by installing a server firmware version that would allow the attacker to disable UEFI Secure Boot. A successful exploit could allow the attacker to bypass the signature validation checks that are done by UEFI Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco.",
      "id": "GSD-2019-1736",
      "modified": "2023-12-13T01:23:51.393911Z",
      "schema_version": "1.4.0"
    }
  },
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        "DATE_PUBLIC": "2020-02-19T16:00:00",
        "ID": "CVE-2019-1736",
        "STATE": "PUBLIC",
        "TITLE": "Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability"
      },
      "affects": {
        "vendor": {
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            {
              "product": {
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                  {
                    "product_name": "Cisco Identity Services Engine Software ",
                    "version": {
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          }
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      },
      "exploit": [
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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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              "tags": [
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            "accessVector": "LOCAL",
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            "baseScore": 6.9,
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          "obtainOtherPrivilege": false,
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          "userInteractionRequired": false
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            "attackVector": "PHYSICAL",
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            "baseScore": 6.6,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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          "impactScore": 5.9
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      },
      "lastModifiedDate": "2020-10-23T18:21Z",
      "publishedDate": "2020-09-23T01:15Z"
    }
  }
}


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  • 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.
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  • 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.



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