GHSA-H2FW-QH29-9JV7

Vulnerability from github – Published: 2022-05-24 17:00 – Updated: 2024-03-21 03:33
VLAI?
Details

systemd 239 through 243 accepts any certificate signed by a trusted certificate authority for DNS Over TLS. Server Name Indication (SNI) is not sent, and there is no hostname validation with the GnuTLS backend.

Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2018-21029"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-10-30T22:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "systemd 239 through 243 accepts any certificate signed by a trusted certificate authority for DNS Over TLS. Server Name Indication (SNI) is not sent, and there is no hostname validation with the GnuTLS backend.",
  "id": "GHSA-h2fw-qh29-9jv7",
  "modified": "2024-03-21T03:33:41Z",
  "published": "2022-05-24T17:00:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-21029"
    },
    {
      "type": "WEB",
      "url": "https://github.com/systemd/systemd/issues/9397"
    },
    {
      "type": "WEB",
      "url": "https://github.com/systemd/systemd/pull/13870"
    },
    {
      "type": "WEB",
      "url": "https://blog.cloudflare.com/dns-encryption-explained"
    },
    {
      "type": "WEB",
      "url": "https://github.com/systemd/systemd/blob/v239/man/resolved.conf.xml#L199-L207"
    },
    {
      "type": "WEB",
      "url": "https://github.com/systemd/systemd/blob/v243/man/resolved.conf.xml#L196-L207"
    },
    {
      "type": "WEB",
      "url": "https://github.com/systemd/systemd/blob/v243/src/resolve/resolved-dnstls-gnutls.c#L62-L63"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4NLJVOJMB6ANDILRLDZK26YGLYBEPHKY"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4NLJVOJMB6ANDILRLDZK26YGLYBEPHKY"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20191122-0002"
    },
    {
      "type": "WEB",
      "url": "https://tools.ietf.org/html/rfc7858#section-4.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.