Vulnerability from bitnami_vulndb
Published
2024-03-06 11:05
Modified
2025-04-03 14:40
Summary
Details

An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "ruby",
        "purl": "pkg:bitnami/ruby"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.0"
            },
            {
              "fixed": "2.6.8"
            },
            {
              "introduced": "2.7.0"
            },
            {
              "fixed": "2.7.4"
            },
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "3.0.2"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-32066"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*"
    ],
    "severity": "High"
  },
  "details": "An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a \"StartTLS stripping attack.\"",
  "id": "BIT-ruby-2021-32066",
  "modified": "2025-04-03T14:40:37.652Z",
  "published": "2024-03-06T11:05:08.777Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ruby/ruby/commit/a21a3b7d23704a01d34bd79d09dc37897e00922a"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/1178562"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2021/10/msg00009.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202401-27"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20210902-0004/"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.ruby-lang.org/en/news/2021/07/07/starttls-stripping-in-net-imap/"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32066"
    }
  ],
  "schema_version": "1.5.0"
}


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