ghsa-96g2-7cqx-5ggh
Vulnerability from github
Published
2022-05-24 17:22
Modified
2022-05-24 17:22
Severity ?
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Details

The client side in OpenSSH 5.7 through 8.3 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client).

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{
  "affected": [],
  "aliases": [
    "CVE-2020-14145"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200",
      "CWE-203"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-06-29T18:15:00Z",
    "severity": "MODERATE"
  },
  "details": "The client side in OpenSSH 5.7 through 8.3 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client).",
  "id": "GHSA-96g2-7cqx-5ggh",
  "modified": "2022-05-24T17:22:01Z",
  "published": "2022-05-24T17:22:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-14145"
    },
    {
      "type": "WEB",
      "url": "https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d"
    },
    {
      "type": "WEB",
      "url": "https://docs.ssh-mitm.at/CVE-2020-14145.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202105-35"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20200709-0004"
    },
    {
      "type": "WEB",
      "url": "https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2020/12/02/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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