CVE-2023-40551 Shim: out of bounds read when parsing mz binaries

2024-01-2916:46:43

CWE-125

redhat

github.com

flaw

mz binary format

out-of-bounds read

crash

data exposure

5.1 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

HIGH

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

6.4 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.6%

JSON

A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system’s boot phase.

CNA Affected

[
  {
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7::server",
      "cpe:/o:redhat:enterprise_linux:7::client",
      "cpe:/o:redhat:enterprise_linux:7::workstation"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-3.el7",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7::server",
      "cpe:/o:redhat:enterprise_linux:7::client",
      "cpe:/o:redhat:enterprise_linux:7::workstation"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-1.el7",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim-signed",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:8::baseos"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-4.el8_9",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:rhel_e4s:8.2::baseos",
      "cpe:/o:redhat:rhel_aus:8.2::baseos",
      "cpe:/o:redhat:rhel_tus:8.2::baseos"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.2 Advanced Update Support",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-2.el8_2",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:rhel_e4s:8.2::baseos",
      "cpe:/o:redhat:rhel_aus:8.2::baseos",
      "cpe:/o:redhat:rhel_tus:8.2::baseos"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.2 Telecommunications Update Service",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-2.el8_2",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:rhel_e4s:8.2::baseos",
      "cpe:/o:redhat:rhel_aus:8.2::baseos",
      "cpe:/o:redhat:rhel_tus:8.2::baseos"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-2.el8_2",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:rhel_tus:8.4::baseos",
      "cpe:/o:redhat:rhel_aus:8.4::baseos",
      "cpe:/o:redhat:rhel_e4s:8.4::baseos"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-2.el8_4",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:rhel_tus:8.4::baseos",
      "cpe:/o:redhat:rhel_aus:8.4::baseos",
      "cpe:/o:redhat:rhel_e4s:8.4::baseos"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.4 Telecommunications Update Service",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-2.el8_4",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:rhel_tus:8.4::baseos",
      "cpe:/o:redhat:rhel_aus:8.4::baseos",
      "cpe:/o:redhat:rhel_e4s:8.4::baseos"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-2.el8_4",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:rhel_eus:8.6::baseos"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.6 Extended Update Support",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-2.el8_6",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:rhel_eus:8.8::crb",
      "cpe:/o:redhat:rhel_eus:8.8::baseos"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.8 Extended Update Support",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-2.el8",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:rhel_eus:8.8::crb",
      "cpe:/o:redhat:rhel_eus:8.8::baseos"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.8 Extended Update Support",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-2.el8",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim-unsigned-x64",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:9::baseos"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-4.el9_3",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:rhel_eus:9.0::baseos",
      "cpe:/a:redhat:rhel_eus:9.0::appstream",
      "cpe:/a:redhat:rhel_eus:9.0::crb"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9.0 Extended Update Support",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-3.el9",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:rhel_eus:9.0::baseos",
      "cpe:/a:redhat:rhel_eus:9.0::appstream",
      "cpe:/a:redhat:rhel_eus:9.0::crb"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9.0 Extended Update Support",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-2.el9",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim-unsigned-aarch64",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:rhel_eus:9.0::baseos",
      "cpe:/a:redhat:rhel_eus:9.0::appstream",
      "cpe:/a:redhat:rhel_eus:9.0::crb"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9.0 Extended Update Support",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-2.el9",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim-unsigned-x64",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:rhel_eus:9.2::baseos"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9.2 Extended Update Support",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:15.8-3.el9_2",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "shim",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  }
]