FKIE_CVE-2021-36093

Vulnerability from fkie_nvd - Published: 2021-09-06 14:15 - Updated: 2026-06-17 03:58
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
It's possible to create an email which can be stuck while being processed by PostMaster filters, causing DoS. This issue affects: OTRS AG ((OTRS)) Community Edition 6.0.x version 6.0.1 and later versions. OTRS AG OTRS 7.0.x version 7.0.28 and prior versions; 8.0.x version 8.0.15 and prior versions.
References
security@otrs.comhttps://otrs.com/release-notes/otrs-security-advisory-2021-16/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://otrs.com/release-notes/otrs-security-advisory-2021-16/Vendor Advisory
Impacted products
Vendor Product Version
otrs otrs *
otrs otrs *
otrs otrs *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "((OTRS)) Community Edition",
          "vendor": "OTRS AG",
          "versions": [
            {
              "lessThan": "6.0.x*",
              "status": "affected",
              "version": "6.0.1",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "OTRS",
          "vendor": "OTRS AG",
          "versions": [
            {
              "lessThanOrEqual": "7.0.28",
              "status": "affected",
              "version": "7.0.x",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "8.0.15",
              "status": "affected",
              "version": "8.0.x",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@otrs.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:otrs:otrs:*:*:*:*:community:*:*:*",
              "matchCriteriaId": "3B2D503B-661B-43EC-9902-D0613A037AA4",
              "versionStartIncluding": "6.0.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:otrs:otrs:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "336DCF0F-236B-46A0-A112-A201F9B6014D",
              "versionEndExcluding": "7.0.29",
              "versionStartIncluding": "7.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:otrs:otrs:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "48EBDE7F-60BB-4F61-9042-8FF68EF728A6",
              "versionEndExcluding": "8.0.16",
              "versionStartIncluding": "8.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "It\u0027s possible to create an email which can be stuck while being processed by PostMaster filters, causing DoS. This issue affects: OTRS AG ((OTRS)) Community Edition 6.0.x version 6.0.1 and later versions. OTRS AG OTRS 7.0.x version 7.0.28 and prior versions; 8.0.x version 8.0.15 and prior versions."
    },
    {
      "lang": "es",
      "value": "Es posible crear un correo electr\u00f3nico que puede atascarse mientras es procesado por los filtros PostMaster, causando DoS. Este problema afecta a: OTRS AG ((OTRS)) Community Edition versi\u00f3n 6.0.x, versi\u00f3n 6.0.1 y versiones posteriores. OTRS AG OTRS versi\u00f3n 7.0.x, versi\u00f3n 7.0.28 y versiones anteriores; versi\u00f3n 8.0.x, versi\u00f3n 8.0.15 y versiones anteriores."
    }
  ],
  "id": "CVE-2021-36093",
  "lastModified": "2026-06-17T03:58:22.020",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "security@otrs.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-09-06T14:15:07.197",
  "references": [
    {
      "source": "security@otrs.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://otrs.com/release-notes/otrs-security-advisory-2021-16/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://otrs.com/release-notes/otrs-security-advisory-2021-16/"
    }
  ],
  "sourceIdentifier": "security@otrs.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-185"
        }
      ],
      "source": "security@otrs.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "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

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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.



Related by attack behaviour

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.