ghsa-9cmp-2g73-ff98
Vulnerability from github
Published
2023-08-07 15:30
Modified
2024-02-21 21:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Details

A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ("tun: tun_chr_open(): correctly initialize socket uid"), - 66b2c338adce ("tap: tap_open(): correctly initialize socket uid"), pass "inode->i_uid" to sock_init_data_uid() as the last parameter and that turns out to not be accurate.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-4194"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-843",
      "CWE-863"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-08-07T14:15:11Z",
    "severity": "MODERATE"
  },
  "details": "A flaw was found in the Linux kernel\u0027s TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 (\"tun: tun_chr_open(): correctly initialize socket uid\"), - 66b2c338adce (\"tap: tap_open(): correctly initialize socket uid\"), pass \"inode-\u003ei_uid\" to sock_init_data_uid() as the last parameter and that turns out to not be accurate.",
  "id": "GHSA-9cmp-2g73-ff98",
  "modified": "2024-02-21T21:30:26Z",
  "published": "2023-08-07T15:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4194"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2023:6583"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2023-4194"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2229498"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/344H6HO6SSC4KT7PDFXSDIXKMKHISSGF"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3TYLSJ2SAI7RF56ZLQ5CQWCJLVJSD73Q"
    },
    {
      "type": "WEB",
      "url": "https://lore.kernel.org/all/20230731164237.48365-1-lersek@redhat.com"
    },
    {
      "type": "WEB",
      "url": "https://lore.kernel.org/all/20230731164237.48365-2-lersek@redhat.com"
    },
    {
      "type": "WEB",
      "url": "https://lore.kernel.org/all/20230731164237.48365-3-lersek@redhat.com"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20231027-0002"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2023/dsa-5480"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2023/dsa-5492"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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