fkie_cve-2021-20194
Vulnerability from fkie_nvd
Published
2021-02-23 23:15
Modified
2024-11-21 05:46
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
There is a vulnerability in the linux kernel versions higher than 5.2 (if kernel compiled with config params CONFIG_BPF_SYSCALL=y , CONFIG_BPF=y , CONFIG_CGROUPS=y , CONFIG_CGROUP_BPF=y , CONFIG_HARDENED_USERCOPY not set, and BPF hook to getsockopt is registered). As result of BPF execution, the local user can trigger bug in __cgroup_bpf_run_filter_getsockopt() function that can lead to heap overflow (because of non-hardened usercopy). The impact of attack could be deny of service or possibly privileges escalation.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1912683Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://security.netapp.com/advisory/ntap-20210326-0003/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1912683Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210326-0003/Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
redhat openshift_container_platform 4.4
redhat openshift_container_platform 4.5
redhat openshift_container_platform 4.6
redhat enterprise_linux 8.0


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  "cveTags": [],
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      "lang": "en",
      "value": "There is a vulnerability in the linux kernel versions higher than 5.2 (if kernel compiled with config params CONFIG_BPF_SYSCALL=y , CONFIG_BPF=y , CONFIG_CGROUPS=y , CONFIG_CGROUP_BPF=y , CONFIG_HARDENED_USERCOPY not set, and BPF hook to getsockopt is registered). As result of BPF execution, the local user can trigger bug in __cgroup_bpf_run_filter_getsockopt() function that can lead to heap overflow (because of non-hardened usercopy). The impact of attack could be deny of service or possibly privileges escalation."
    },
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      "value": "Se presenta una vulnerabilidad en el kernel de Linux versiones superiores a 5.2 (si el kernel compilado con los par\u00e1metros config CONFIG_BPF_SYSCALL=y , CONFIG_BPF=y , CONFIG_CGROUPS=y , CONFIG_CGROUP_BPF=y , CONFIG_HARDENED_USERCOPY no se establece y el hook BPF a getsockopt est\u00e1 registrado).\u0026#xa0;Como resultado de la ejecuci\u00f3n de BPF, el usuario local puede desencadenar un error en la funci\u00f3n __cgroup_bpf_run_filter_getsockopt() que puede conllevar a un desbordamiento de la pila (debido a una copia de usuario no reforzada).\u0026#xa0;El impacto del ataque podr\u00eda ser la denegaci\u00f3n de servicio o posiblemente una escalada de privilegios"
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  "id": "CVE-2021-20194",
  "lastModified": "2024-11-21T05:46:06.407",
  "metrics": {
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        "baseSeverity": "MEDIUM",
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          "accessVector": "LOCAL",
          "authentication": "NONE",
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  "published": "2021-02-23T23:15:13.100",
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      "source": "nvd@nist.gov",
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}


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