fkie_cve-2022-45873
Vulnerability from fkie_nvd
Published
2022-11-23 23:15
Modified
2024-11-21 07:29
Summary
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.
Impacted products



{
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                     versionEndIncluding: "251",
                     versionStartIncluding: "250",
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   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "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.",
      },
      {
         lang: "es",
         value: "systemd 250 y 251 permiten a los usuarios locales lograr un punto muerto en systemd-coredump al desencadenar un bloqueo que tiene un largo backtrace. Esto ocurre en parse_elf_object enshared/elf-util.c. La metodología de explotación consiste en bloquear un binario que llama a la misma función de forma recursiva y colocarlo en un directorio profundamente anidado para que su seguimiento sea lo suficientemente grande como para provocar el punto muerto. Esto se debe hacer 16 veces cuando se establece MaxConnections=16 para el archivo systemd/units/systemd-coredump.socket.",
      },
   ],
   id: "CVE-2022-45873",
   lastModified: "2024-11-21T07:29:52.680",
   metrics: {
      cvssMetricV31: [
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            cvssData: {
               attackComplexity: "LOW",
               attackVector: "LOCAL",
               availabilityImpact: "HIGH",
               baseScore: 5.5,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               privilegesRequired: "LOW",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
               version: "3.1",
            },
            exploitabilityScore: 1.8,
            impactScore: 3.6,
            source: "nvd@nist.gov",
            type: "Primary",
         },
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   },
   published: "2022-11-23T23:15:10.183",
   references: [
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   sourceIdentifier: "cve@mitre.org",
   vulnStatus: "Modified",
   weaknesses: [
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               lang: "en",
               value: "CWE-400",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
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   ],
}


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