FKIE_CVE-2020-29450

Vulnerability from fkie_nvd - Published: 2021-01-19 01:15 - Updated: 2026-06-17 03:11
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
Affected versions of Atlassian Confluence Server and Data Center allow remote attackers to impact the application's availability via a Denial of Service (DoS) vulnerability in the avatar upload feature. The affected versions are before version 7.2.0.
References
security@atlassian.comhttps://jira.atlassian.com/browse/CONFSERVER-60854Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://jira.atlassian.com/browse/CONFSERVER-60854Issue Tracking, Vendor Advisory
Impacted products
Vendor Product Version
atlassian confluence_data_center *
atlassian confluence_server *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Confluence Server",
          "vendor": "Atlassian",
          "versions": [
            {
              "lessThan": "7.2.0",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@atlassian.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8E001413-D8E1-41F1-9F61-08C0D2AC1FC0",
              "versionEndExcluding": "7.2.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9D57E526-A4D8-4F39-96E3-BABA3108FA05",
              "versionEndExcluding": "7.2.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Affected versions of Atlassian Confluence Server and Data Center allow remote attackers to impact the application\u0027s availability via a Denial of Service (DoS) vulnerability in the avatar upload feature. The affected versions are before version 7.2.0."
    },
    {
      "lang": "es",
      "value": "Las versiones afectadas de Atlassian Confluence Server y Data Center permiten a atacantes remotos afectar la disponibilidad de la aplicaci\u00f3n por medio de una vulnerabilidad de Denegaci\u00f3n de Servicio (DoS) en la funcionalidad de carga del avatar. Las versiones afectadas son anteriores a la versi\u00f3n 7.2.0"
    }
  ],
  "id": "CVE-2020-29450",
  "lastModified": "2026-06-17T03:11:17.857",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-01-19T01:15:14.603",
  "references": [
    {
      "source": "security@atlassian.com",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "url": "https://jira.atlassian.com/browse/CONFSERVER-60854"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "url": "https://jira.atlassian.com/browse/CONFSERVER-60854"
    }
  ],
  "sourceIdentifier": "security@atlassian.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ],
      "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.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.