CVE-2022-28737

Published Jul 20, 2023

Last updated a year ago

Overview

Description: There's a possible overflow in handle_image() when shim tries to load and execute crafted EFI executables; The handle_image() function takes into account the SizeOfRawData field from each section to be loaded. An attacker can leverage this to perform out-of-bound writes into memory. Arbitrary code execution is not discarded in such scenario.
Source: security@ubuntu.com
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Primary
Base score: 7.8
Impact score: 5.9
Exploitability score: 1.8
Vector string: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: HIGH

Weaknesses

nvd@nist.gov: CWE-787

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:redhat:shim:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "0A305DFD-CD50-408F-843E-0234EE1D25DA",
            "versionEndExcluding": "15.6"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References