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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