fkie_cve-2017-0881
Vulnerability from fkie_nvd
Published
2017-03-28 02:59
Modified
2025-04-20 01:37
Summary
An error in the implementation of an autosubscribe feature in the check_stream_exists route of the Zulip group chat application server before 1.4.3 allowed an authenticated user to subscribe to a private stream that should have required an invitation from an existing member to join. The issue affects all previously released versions of the Zulip server.
Impacted products
Vendor Product Version
zulip zulip_server *



{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C798D82E-5E3A-4784-9D67-3977B15FE8D5",
              "versionEndExcluding": "1.4.3",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An error in the implementation of an autosubscribe feature in the check_stream_exists route of the Zulip group chat application server before 1.4.3 allowed an authenticated user to subscribe to a private stream that should have required an invitation from an existing member to join. The issue affects all previously released versions of the Zulip server."
    },
    {
      "lang": "es",
      "value": "Un error en la implementaci\u00f3n de una funci\u00f3n de suscripci\u00f3n autom\u00e1tica en la ruta check_stream_exists del servidor de aplicaciones de chat en grupo Zulip en versiones anteriores a 1.4.3 permiti\u00f3 a un usuario autenticado suscribirse a un flujo privado que deber\u00eda haber requerido una invitaci\u00f3n de un miembro existente para unirse. El problema afecta a todas las versiones liberadas anteriormente del servidor Zulip."
    }
  ],
  "id": "CVE-2017-0881",
  "lastModified": "2025-04-20T01:37:25.860",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "NONE",
          "baseScore": 4.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2017-03-28T02:59:01.463",
  "references": [
    {
      "source": "support@hackerone.com",
      "tags": [
        "Third Party Advisory",
        "Vendor Advisory"
      ],
      "url": "http://www.securityfocus.com/bid/97159"
    },
    {
      "source": "support@hackerone.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/zulip/zulip/commit/7ecda1ac8e26d8fb3725e954b2dc4723dda2255f"
    },
    {
      "source": "support@hackerone.com",
      "tags": [
        "Patch",
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://groups.google.com/d/msg/zulip-announce/VyawgRuoY34/NTBwnTArGwAJ"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "Vendor Advisory"
      ],
      "url": "http://www.securityfocus.com/bid/97159"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/zulip/zulip/commit/7ecda1ac8e26d8fb3725e954b2dc4723dda2255f"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://groups.google.com/d/msg/zulip-announce/VyawgRuoY34/NTBwnTArGwAJ"
    }
  ],
  "sourceIdentifier": "support@hackerone.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ],
      "source": "support@hackerone.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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