GHSA-542X-JXRC-HW4X

Vulnerability from github – Published: 2022-03-14 00:00 – Updated: 2022-03-21 00:00
VLAI?
Details

** DISPUTED ** An issue was discovered in OpenSSH before 8.9. If a client is using public-key authentication with agent forwarding but without -oLogLevel=verbose, and an attacker has silently modified the server to support the None authentication option, then the user cannot determine whether FIDO authentication is going to confirm that the user wishes to connect to that server, or that the user wishes to allow that server to connect to a different server on the user's behalf. NOTE: the vendor's position is "this is not an authentication bypass, since nothing is being bypassed."

Severity ?
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2021-36368"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-03-13T00:15:00Z",
    "severity": "LOW"
  },
  "details": "** DISPUTED ** An issue was discovered in OpenSSH before 8.9. If a client is using public-key authentication with agent forwarding but without -oLogLevel=verbose, and an attacker has silently modified the server to support the None authentication option, then the user cannot determine whether FIDO authentication is going to confirm that the user wishes to connect to that server, or that the user wishes to allow that server to connect to a different server on the user\u0027s behalf. NOTE: the vendor\u0027s position is \"this is not an authentication bypass, since nothing is being bypassed.\"",
  "id": "GHSA-542x-jxrc-hw4x",
  "modified": "2022-03-21T00:00:22Z",
  "published": "2022-03-14T00:00:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-36368"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openssh/openssh-portable/pull/258"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.mindrot.org/show_bug.cgi?id=3316"
    },
    {
      "type": "WEB",
      "url": "https://docs.ssh-mitm.at/trivialauth.html"
    },
    {
      "type": "WEB",
      "url": "https://security-tracker.debian.org/tracker/CVE-2021-36368"
    },
    {
      "type": "WEB",
      "url": "https://www.openssh.com/security.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.