CERTFR-2021-AVI-004

Vulnerability from certfr_avis - Published: - Updated:

De multiples vulnérabilités ont été découvertes dans la bibliothèque cryptographique Bouncy Castle. Elle permet à un attaquant de provoquer un contournement de la politique de sécurité. Une erreur de programmation, introduite dans les versions 1.65 et 1.66 de la bibliothèque, permet de tromper la méthode de vérification d'un mot de passe OpenBSDBCrypt.checkPassword() et faire valider un mot de passe différent du mot de passe légitime en quelques tentatives.

Solution

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

None
Impacted products
Vendor Product Description
N/A N/A Bibliothèque cryptographique Bouncy Castle versions 1.65 et 1.66
References

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{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Biblioth\u00e8que cryptographique Bouncy Castle versions 1.65 et 1.66",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "N/A",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2020-28052",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-28052"
    }
  ],
  "links": [],
  "reference": "CERTFR-2021-AVI-004",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2021-01-06T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans la biblioth\u00e8que\ncryptographique Bouncy Castle. Elle permet \u00e0 un attaquant de provoquer\nun contournement de la politique de s\u00e9curit\u00e9. Une erreur de\nprogrammation, introduite dans les versions 1.65 et 1.66 de la\nbiblioth\u00e8que, permet de tromper la m\u00e9thode de v\u00e9rification d\u0027un mot de\npasse *OpenBSDBCrypt.checkPassword()* et faire valider un mot de passe\ndiff\u00e9rent du mot de passe l\u00e9gitime en quelques tentatives.\n",
  "title": "Vuln\u00e9rabilit\u00e9 dans Bouncy Castle",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Bouncy Castle du 01 novembre 2020",
      "url": "https://www.bouncycastle.org/releasenotes.html"
    }
  ]
}


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