{
  "schema_version": "1.4.0",
  "id": "GHSA-4f68-49qq-h392",
  "modified": "2023-09-05T21:47:52Z",
  "published": "2021-05-24T18:12:20Z",
  "aliases": [
    "CVE-2020-13163"
  ],
  "summary": "Improper certificate validation in em-imap",
  "details": "em-imap 0.5 and earlier use the library eventmachine in an insecure way that allows an attacker to perform a man-in-the-middle attack against users of the library. The hostname in a TLS server certificate is not verified.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "em-imap"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.5"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13163"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ConradIrwin/em-imap/issues/25"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ConradIrwin/em-imap"
    },
    {
      "type": "ADVISORY",
      "url": "https://securitylab.github.com/advisories/GHSL-2020-095-conradirwin-em-imap"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2021-05-20T22:25:15Z",
    "nvd_published_at": "2020-05-19T22:15:00Z"
  }
}