FKIE_CVE-2021-35342

Vulnerability from fkie_nvd - Published: 2021-08-27 10:15 - Updated: 2026-06-17 03:57
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
The useradm service 1.14.0 (in Northern.tech Mender Enterprise 2.7.x before 2.7.1) and 1.13.0 (in Northern.tech Mender Enterprise 2.6.x before 2.6.1) allows users to access the system with their JWT token after logout, because of missing invalidation (if the JWT verification cache is enabled).
References
cve@mitre.orghttps://mender.io/blog/cve-2021-35342-useradm-logout-vulnerabililtyThird Party Advisory
cve@mitre.orghttps://northern.tech/our-productsProduct, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://mender.io/blog/cve-2021-35342-useradm-logout-vulnerabililtyThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://northern.tech/our-productsProduct, Vendor Advisory
Impacted products
Vendor Product Version
northern.tech useradm 1.14.0
northern.tech mender *
northern.tech useradm 1.13.0
northern.tech mender *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The useradm service 1.14.0 (in Northern.tech Mender Enterprise 2.7.x before 2.7.1) and 1.13.0 (in Northern.tech Mender Enterprise 2.6.x before 2.6.1) allows users to access the system with their JWT token after logout, because of missing invalidation (if the JWT verification cache is enabled)."
    },
    {
      "lang": "es",
      "value": "El servicio useradm versiones 1.14.0 (en Northern.tech Mender Enterprise 2.7.x versiones anteriores a 2.7.1) y 1.13.0 (en Northern.tech Mender Enterprise 2.6.x versiones anteriores a 2.6.1) permite a usuarios acceder al sistema con su token JWT despu\u00e9s de cerrar la sesi\u00f3n, debido a una falta de no comprobaci\u00f3n (si la cach\u00e9 de comprobaci\u00f3n JWT est\u00e1 habilitada)."
    }
  ],
  "id": "CVE-2021-35342",
  "lastModified": "2026-06-17T03:57:27.093",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-08-27T10:15:07.793",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://mender.io/blog/cve-2021-35342-useradm-logout-vulnerabililty"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      ],
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-613"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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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.