FKIE_CVE-2021-40694

Vulnerability from fkie_nvd - Published: 2022-09-29 03:15 - Updated: 2026-06-17 04:07
Severity
4.9 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Summary
Insufficient escaping of the LaTeX preamble made it possible for site administrators to read files available to the HTTP server system account.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2043421Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2043421Issue Tracking, Third Party Advisory
Impacted products
Vendor Product Version
moodle moodle *
moodle moodle *
moodle moodle *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "moodle",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "3.11 to 3.11.2, 3.10 to 3.10.6, 3.9 to 3.9.9 and earlier unsupported versions"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9A0AFD99-1DA3-4200-A8DB-89C3F3E08622",
              "versionEndExcluding": "3.9.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E919297C-2622-4EA3-8BBE-8FBE68492EB6",
              "versionEndExcluding": "3.10.7",
              "versionStartIncluding": "3.10.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E0AE1C34-6DB1-4D5D-8E07-B98A5BF96687",
              "versionEndExcluding": "3.11.3",
              "versionStartIncluding": "3.11.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Insufficient escaping of the LaTeX preamble made it possible for site administrators to read files available to the HTTP server system account."
    },
    {
      "lang": "es",
      "value": "Un escape insuficiente del pre\u00e1mbulo de LaTeX hac\u00eda posible que los administradores del sitio leyeran archivos disponibles para la cuenta del sistema del servidor HTTP"
    }
  ],
  "id": "CVE-2021-40694",
  "lastModified": "2026-06-17T04:07:15.907",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2022-09-29T03:15:14.417",
  "references": [
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2043421"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2043421"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-116"
        }
      ],
      "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.
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  • 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.