FKIE_CVE-2020-36911

Vulnerability from fkie_nvd - Published: 2026-01-13 23:15 - Updated: 2026-06-17 03:16
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Covenant 0.1.3 - 0.5 contains a remote code execution vulnerability that allows attackers to craft malicious JWT tokens with administrative privileges. Attackers can generate forged tokens with admin roles and upload custom DLL payloads to execute arbitrary commands on the target system.
References
disclosure@vulncheck.comhttps://cobbr.io/Covenant.htmlBroken Link
disclosure@vulncheck.comhttps://github.com/Zeop-CyberSec/covenant_rce/blob/master/covenant_jwt_rce.rbProduct
disclosure@vulncheck.comhttps://github.com/cobbr/CovenantProduct
disclosure@vulncheck.comhttps://web.archive.org/web/20201013165001/https://twitter.com/cobbr_io/status/1316058367161401344Issue Tracking
disclosure@vulncheck.comhttps://web.archive.org/web/20201101052547/https://blog.null.farm/hunting-the-huntersExploit, Third Party Advisory
disclosure@vulncheck.comhttps://www.exploit-db.com/exploits/51141Exploit
disclosure@vulncheck.comhttps://www.vulncheck.com/advisories/covenant-remote-code-execution-rceThird Party Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/Zeop-CyberSec/covenant_rce/blob/master/covenant_jwt_rce.rbProduct
134c704f-9b21-4f2e-91b3-4a467353bcc0https://web.archive.org/web/20201101052547/https://blog.null.farm/hunting-the-huntersExploit, Third Party Advisory
Impacted products
Vendor Product Version
cobbr covenant *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Covenant",
          "vendor": "Cobbr",
          "versions": [
            {
              "lessThanOrEqual": "0.5",
              "status": "affected",
              "version": "0.1.3",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cobbr:covenant:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E0702EAD-9F24-48FA-981F-BBF6E5B61DCF",
              "versionEndIncluding": "0.5",
              "versionStartIncluding": "0.1.3",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Covenant 0.1.3 - 0.5 contains a remote code execution vulnerability that allows attackers to craft malicious JWT tokens with administrative privileges. Attackers can generate forged tokens with admin roles and upload custom DLL payloads to execute arbitrary commands on the target system."
    },
    {
      "lang": "es",
      "value": "Covenant 0.1.3 - 0.5 contiene una vulnerabilidad de ejecuci\u00f3n remota de c\u00f3digo que permite a los atacantes crear tokens JWT maliciosos con privilegios administrativos. Los atacantes pueden generar tokens falsificados con roles de administrador y cargar cargas \u00fatiles DLL personalizadas para ejecutar comandos arbitrarios en el sistema objetivo."
    }
  ],
  "id": "CVE-2020-36911",
  "lastModified": "2026-06-17T03:16:29.133",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2020-36911",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-01-14T15:55:27.044236Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-01-13T23:15:48.437",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Broken Link"
      ],
      "url": "https://cobbr.io/Covenant.html"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Product"
      ],
      "url": "https://github.com/Zeop-CyberSec/covenant_rce/blob/master/covenant_jwt_rce.rb"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Product"
      ],
      "url": "https://github.com/cobbr/Covenant"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Issue Tracking"
      ],
      "url": "https://web.archive.org/web/20201013165001/https://twitter.com/cobbr_io/status/1316058367161401344"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://web.archive.org/web/20201101052547/https://blog.null.farm/hunting-the-hunters"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Exploit"
      ],
      "url": "https://www.exploit-db.com/exploits/51141"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.vulncheck.com/advisories/covenant-remote-code-execution-rce"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Product"
      ],
      "url": "https://github.com/Zeop-CyberSec/covenant_rce/blob/master/covenant_jwt_rce.rb"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://web.archive.org/web/20201101052547/https://blog.null.farm/hunting-the-hunters"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-798"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.