ghsa-8qc8-27v8-7664
Vulnerability from github
Published
2022-05-13 01:38
Modified
2022-05-13 01:38
Severity ?
4.4 (Medium) - CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Details

It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal keyring, such as '.dns_resolver' in RHEL-7 or '.builtin_trusted_keys' upstream, by joining it as its session keyring. This allows root to bypass module signature verification by adding a new public key of its own devising to the keyring.

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{
  "affected": [],
  "aliases": [
    "CVE-2016-9604"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-07-11T13:29:00Z",
    "severity": "MODERATE"
  },
  "details": "It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal keyring, such as \u0027.dns_resolver\u0027 in RHEL-7 or \u0027.builtin_trusted_keys\u0027 upstream, by joining it as its session keyring. This allows root to bypass module signature verification by adding a new public key of its own devising to the keyring.",
  "id": "GHSA-8qc8-27v8-7664",
  "modified": "2022-05-13T01:38:28Z",
  "published": "2022-05-13T01:38:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-9604"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2017:1842"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2017:2077"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2017:2669"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.novell.com/show_bug.cgi?id=1035576"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee8f844e3c5a73b999edf733df1c529d6503ec2f"
    },
    {
      "type": "WEB",
      "url": "http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/102135"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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