ghsa-3w8w-mhj7-j5rc
Vulnerability from github
Published
2022-11-24 00:30
Modified
2022-12-01 15:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

systemd 250 and 251 allows local users to achieve a systemd-coredump deadlock by triggering a crash that has a long backtrace. This occurs in parse_elf_object in shared/elf-util.c. The exploitation methodology is to crash a binary calling the same function recursively, and put it in a deeply nested directory to make its backtrace large enough to cause the deadlock. This must be done 16 times when MaxConnections=16 is set for the systemd/units/systemd-coredump.socket file.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-45873"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-11-23T23:15:00Z",
    "severity": "MODERATE"
  },
  "details": "systemd 250 and 251 allows local users to achieve a systemd-coredump deadlock by triggering a crash that has a long backtrace. This occurs in parse_elf_object in shared/elf-util.c. The exploitation methodology is to crash a binary calling the same function recursively, and put it in a deeply nested directory to make its backtrace large enough to cause the deadlock. This must be done 16 times when MaxConnections=16 is set for the systemd/units/systemd-coredump.socket file.",
  "id": "GHSA-3w8w-mhj7-j5rc",
  "modified": "2022-12-01T15:30:19Z",
  "published": "2022-11-24T00:30:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-45873"
    },
    {
      "type": "WEB",
      "url": "https://github.com/systemd/systemd/pull/24853#issuecomment-1326561497"
    },
    {
      "type": "WEB",
      "url": "https://github.com/systemd/systemd/pull/25055#issuecomment-1313733553"
    },
    {
      "type": "WEB",
      "url": "https://github.com/systemd/systemd/commit/076b807be472630692c5348c60d0c2b7b28ad437"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MS5N5SLYAHKENLAJWYBDKU55ICU3SVZF"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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