FKIE_CVE-2016-4340

Vulnerability from fkie_nvd - Published: 2017-01-23 21:59 - Updated: 2026-05-13 00:24
Severity
8.8 (High) - CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
The impersonate feature in Gitlab 8.7.0, 8.6.0 through 8.6.7, 8.5.0 through 8.5.11, 8.4.0 through 8.4.9, 8.3.0 through 8.3.8, and 8.2.0 through 8.2.4 allows remote authenticated users to "log in" as any other user via unspecified vectors.
References
cve@mitre.orghttp://packetstormsecurity.com/files/138368/GitLab-Impersonate-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
cve@mitre.orghttps://about.gitlab.com/2016/05/02/cve-2016-4340-patches/Mitigation, Patch, Vendor Advisory
cve@mitre.orghttps://gitlab.com/gitlab-org/gitlab-ce/issues/15548Issue Tracking, Patch, Vendor Advisory
cve@mitre.orghttps://www.exploit-db.com/exploits/40236/Exploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/138368/GitLab-Impersonate-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://about.gitlab.com/2016/05/02/cve-2016-4340-patches/Mitigation, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://gitlab.com/gitlab-org/gitlab-ce/issues/15548Issue Tracking, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/40236/Exploit, Third Party Advisory, VDB Entry
Impacted products
Vendor Product Version
gitlab gitlab 8.2.0
gitlab gitlab 8.2.1
gitlab gitlab 8.2.2
gitlab gitlab 8.2.3
gitlab gitlab 8.2.4
gitlab gitlab 8.3.0
gitlab gitlab 8.3.1
gitlab gitlab 8.3.2
gitlab gitlab 8.3.3
gitlab gitlab 8.3.4
gitlab gitlab 8.3.5
gitlab gitlab 8.3.6
gitlab gitlab 8.3.7
gitlab gitlab 8.3.8
gitlab gitlab 8.4.0
gitlab gitlab 8.4.1
gitlab gitlab 8.4.2
gitlab gitlab 8.4.3
gitlab gitlab 8.4.4
gitlab gitlab 8.4.5
gitlab gitlab 8.4.6
gitlab gitlab 8.4.7
gitlab gitlab 8.4.8
gitlab gitlab 8.4.9
gitlab gitlab 8.5.0
gitlab gitlab 8.5.1
gitlab gitlab 8.5.2
gitlab gitlab 8.5.3
gitlab gitlab 8.5.4
gitlab gitlab 8.5.5
gitlab gitlab 8.5.6
gitlab gitlab 8.5.7
gitlab gitlab 8.5.8
gitlab gitlab 8.5.9
gitlab gitlab 8.5.10
gitlab gitlab 8.5.11
gitlab gitlab 8.6.0
gitlab gitlab 8.6.1
gitlab gitlab 8.6.2
gitlab gitlab 8.6.3
gitlab gitlab 8.6.4
gitlab gitlab 8.6.5
gitlab gitlab 8.6.6
gitlab gitlab 8.6.7
gitlab gitlab 8.7.0
To clipboard 

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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The impersonate feature in Gitlab 8.7.0, 8.6.0 through 8.6.7, 8.5.0 through 8.5.11, 8.4.0 through 8.4.9, 8.3.0 through 8.3.8, and 8.2.0 through 8.2.4 allows remote authenticated users to \"log in\" as any other user via unspecified vectors."
    },
    {
      "lang": "es",
      "value": "La caracter\u00edstica de suplantaci\u00f3n en Gitlab 8.7.0, 8.6.0 hasta la versi\u00f3n 8.6.7, 8.5.0 hasta la versi\u00f3n 8.5.11, 8.4.0 hasta la versi\u00f3n 8.4.9, 8.3.0 hasta la versi\u00f3n 8.3.8 y 8.2.0 hasta la versi\u00f3n 8.2.4 permite a usuarios remotos autenticados para \"iniciar sesi\u00f3n\" como cualquier otro usuario a trav\u00e9s de vectores no especificados."
    }
  ],
  "id": "CVE-2016-4340",
  "lastModified": "2026-05-13T00:24:29.033",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2017-01-23T21:59:01.487",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/138368/GitLab-Impersonate-Privilege-Escalation.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://about.gitlab.com/2016/05/02/cve-2016-4340-patches/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://gitlab.com/gitlab-org/gitlab-ce/issues/15548"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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        "Third Party Advisory",
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      "url": "https://www.exploit-db.com/exploits/40236/"
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      "tags": [
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    {
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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}


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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.