ghsa-gx49-h5r3-q3xj
Vulnerability from github
Published
2022-05-24 19:09
Modified
2022-05-24 19:09
Severity ?
7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
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": [],
  "aliases": [
    "CVE-2021-32066"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-326",
      "CWE-755"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-08-01T19:15:00Z",
    "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": "GHSA-gx49-h5r3-q3xj",
  "modified": "2022-05-24T19:09:28Z",
  "published": "2022-05-24T19:09:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32066"
    },
    {
      "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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