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FKIE_CVE-2021-29454

Vulnerability from fkie_nvd - Published: 2022-01-10 20:15 - Updated: 2026-06-17 03:47
Severity
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from application logic. Prior to versions 3.1.42 and 4.0.2, template authors could run arbitrary PHP code by crafting a malicious math string. If a math string was passed through as user provided data to the math function, external users could run arbitrary PHP code by crafting a malicious math string. Users should upgrade to version 3.1.42 or 4.0.2 to receive a patch.
References
security-advisories@github.comhttps://github.com/smarty-php/smarty/commit/215d81a9fa3cd63d82fb3ab56ecaf97cf1e7db71Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/smarty-php/smarty/releases/tag/v3.1.42Release Notes, Third Party Advisory
security-advisories@github.comhttps://github.com/smarty-php/smarty/releases/tag/v4.0.2Release Notes, Third Party Advisory
security-advisories@github.comhttps://github.com/smarty-php/smarty/security/advisories/GHSA-29gp-2c3m-3j6mThird Party Advisory
security-advisories@github.comhttps://lists.debian.org/debian-lts-announce/2022/05/msg00005.htmlMailing List, Third Party Advisory
security-advisories@github.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRAJVDRGCIY5UZ2PQHKDTT7RMKG6WJQQ/
security-advisories@github.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L777JIBIWJV34HS7LXPIDWASG7TT4LNI/
security-advisories@github.comhttps://packagist.org/packages/smarty/smartyProduct, Third Party Advisory
security-advisories@github.comhttps://security.gentoo.org/glsa/202209-09Third Party Advisory
security-advisories@github.comhttps://www.debian.org/security/2022/dsa-5151Third Party Advisory
security-advisories@github.comhttps://www.smarty.net/docs/en/language.function.math.tplVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/smarty-php/smarty/commit/215d81a9fa3cd63d82fb3ab56ecaf97cf1e7db71Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/smarty-php/smarty/releases/tag/v3.1.42Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/smarty-php/smarty/releases/tag/v4.0.2Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/smarty-php/smarty/security/advisories/GHSA-29gp-2c3m-3j6mThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/05/msg00005.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRAJVDRGCIY5UZ2PQHKDTT7RMKG6WJQQ/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L777JIBIWJV34HS7LXPIDWASG7TT4LNI/
af854a3a-2127-422b-91ae-364da2661108https://packagist.org/packages/smarty/smartyProduct, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202209-09Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5151Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.smarty.net/docs/en/language.function.math.tplVendor Advisory
Impacted products
Vendor Product Version
smarty smarty *
smarty smarty *
debian debian_linux 9.0
debian debian_linux 10.0
debian debian_linux 11.0
fedoraproject fedora 36
fedoraproject fedora 37
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "smarty",
          "vendor": "smarty-php",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.1.42"
            },
            {
              "status": "affected",
              "version": "\u003e= 4.0.0, \u003c 4.0.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:smarty:smarty:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4F2A8FC7-D5C2-4D88-A172-000065020043",
              "versionEndExcluding": "3.1.42",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:smarty:smarty:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C66B5163-B419-4BBF-8F97-C6CFEB9CB37A",
              "versionEndExcluding": "4.0.2",
              "versionStartIncluding": "4.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*",
              "matchCriteriaId": "5C675112-476C-4D7C-BCB9-A2FB2D0BC9FD",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*",
              "matchCriteriaId": "E30D0E6F-4AE8-4284-8716-991DFA48CC5D",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from application logic. Prior to versions 3.1.42 and 4.0.2, template authors could run arbitrary PHP code by crafting a malicious math string. If a math string was passed through as user provided data to the math function, external users could run arbitrary PHP code by crafting a malicious math string. Users should upgrade to version 3.1.42 or 4.0.2 to receive a patch."
    },
    {
      "lang": "es",
      "value": "Smarty es un motor de plantillas para PHP que facilita la separaci\u00f3n de la presentaci\u00f3n (HTML/CSS) de la l\u00f3gica de la aplicaci\u00f3n. Antes de las versiones 3.1.42 y 4.0.2, los autores de plantillas pod\u00edan ejecutar c\u00f3digo PHP arbitrario al dise\u00f1ar una cadena matem\u00e1tica maliciosa. Si era pasada una cadena matem\u00e1tica como datos proporcionados por el usuario a la funci\u00f3n matem\u00e1tica, los usuarios externos pod\u00edan ejecutar c\u00f3digo PHP arbitrario al dise\u00f1ar una cadena matem\u00e1tica maliciosa. Los usuarios deben actualizar a la versi\u00f3n 3.1.42 o 4.0.2 para recibir un parche"
    }
  ],
  "id": "CVE-2021-29454",
  "lastModified": "2026-06-17T03:47:40.450",
  "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
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-29454",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-04-23T15:57:13.410401Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2022-01-10T20:15:08.000",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/smarty-php/smarty/commit/215d81a9fa3cd63d82fb3ab56ecaf97cf1e7db71"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://github.com/smarty-php/smarty/releases/tag/v3.1.42"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://github.com/smarty-php/smarty/releases/tag/v4.0.2"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/smarty-php/smarty/security/advisories/GHSA-29gp-2c3m-3j6m"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2022/05/msg00005.html"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRAJVDRGCIY5UZ2PQHKDTT7RMKG6WJQQ/"
    },
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    },
    {
      "source": "security-advisories@github.com",
      "tags": [
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        "Third Party Advisory"
      ],
      "url": "https://packagist.org/packages/smarty/smarty"
    },
    {
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      "url": "https://security.gentoo.org/glsa/202209-09"
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    },
    {
      "source": "security-advisories@github.com",
      "tags": [
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      ],
      "url": "https://www.smarty.net/docs/en/language.function.math.tpl"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
    {
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    },
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    },
    {
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      "url": "https://github.com/smarty-php/smarty/security/advisories/GHSA-29gp-2c3m-3j6m"
    },
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    },
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      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRAJVDRGCIY5UZ2PQHKDTT7RMKG6WJQQ/"
    },
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    },
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      "url": "https://www.smarty.net/docs/en/language.function.math.tpl"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-74"
        }
      ],
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      "type": "Secondary"
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    {
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        {
          "lang": "en",
          "value": "CWE-74"
        }
      ],
      "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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