CVE-2023-42753 Kernel: netfilter: potential slab-out-of-bound access due to integer underflow

2023-09-2520:25:59

CWE-787

redhat

www.cve.org

kernel

netfilter

array indexing

vulnerability

linux

missing macro

7 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

8 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

10.3%

JSON

An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel. A missing macro could lead to a miscalculation of the h->nets array offset, providing attackers with the primitive to arbitrarily increment/decrement a memory buffer out-of-bound. This issue may allow a local user to crash the system or potentially escalate their privileges on the system.

CNA Affected

[
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    "packageName": "kernel-rt",
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    "versions": [
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        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:rhel_extras_rt:7"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "kernel",
    "defaultStatus": "affected",
    "versions": [
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        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7::computenode",
      "cpe:/o:redhat:enterprise_linux:7::workstation",
      "cpe:/o:redhat:enterprise_linux:7::client",
      "cpe:/o:redhat:enterprise_linux:7::server"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "unaffected",
    "packageName": "kpatch-patch",
    "cpes": [
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    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7.7 Advanced Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "kernel",
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  {
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    "defaultStatus": "unaffected",
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    "cpes": [
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    ]
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      "cpe:/o:redhat:rhel_tus:8.2::baseos"
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    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "unaffected",
    "packageName": "kpatch-patch",
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    "vendor": "Red Hat",
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      "cpe:/o:redhat:rhel_e4s:8.2::baseos",
      "cpe:/o:redhat:rhel_tus:8.2::baseos"
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    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
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      "cpe:/o:redhat:rhel_e4s:8.4::baseos",
      "cpe:/o:redhat:rhel_aus:8.4::baseos"
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    "product": "Red Hat Enterprise Linux 8.4 Telecommunications Update Service",
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      "cpe:/a:redhat:rhel_tus:8.4::nfv"
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      "cpe:/o:redhat:rhel_aus:8.4::baseos"
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    "product": "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions",
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    "packageName": "kernel",
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      }
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    "product": "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions",
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  {
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    "packageName": "kernel",
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      "cpe:/a:redhat:enterprise_linux:9::appstream",
      "cpe:/a:redhat:enterprise_linux:9::realtime",
      "cpe:/o:redhat:enterprise_linux:9::baseos",
      "cpe:/a:redhat:enterprise_linux:9::crb"
    ]
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  {
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    ],
    "cpes": [
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      "cpe:/a:redhat:enterprise_linux:9::appstream",
      "cpe:/a:redhat:enterprise_linux:9::realtime",
      "cpe:/o:redhat:enterprise_linux:9::baseos",
      "cpe:/a:redhat:enterprise_linux:9::crb"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9.0 Extended Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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    ],
    "cpes": [
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      "cpe:/a:redhat:rhel_eus:9.0::crb",
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  {
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    "product": "Red Hat Enterprise Linux 6",
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    "defaultStatus": "unaffected",
    "cpes": [
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  },
  {
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]