SecBoard
Zurück zur CVE-Übersicht

CVE-2023-40547

HIGH(8.3)

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

Risk Signal Score22/100 — NIEDRIG
  • CVSS 8.3 — Hoch

EPSS-Score

5%

Exploit-Wahrscheinlichkeit (30 Tage)

CVSS Score

8.3

Technische Schwere

Beschreibung

A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete system compromise. This flaw is only exploitable during the early boot phase, an attacker needs to perform a Man-in-the-Middle or compromise the boot server to be able to exploit this vulnerability successfully.

Referenzen