Executive Summary

Informations
Name CVE-2023-40547 First vendor Publication 2024-01-25
Vendor Cve Last vendor Modification 2024-04-18

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Overall CVSS Score 8.3
Base Score 8.3 Environmental Score 8.3
impact SubScore 6 Temporal Score 8.3
Exploitabality Sub Score 1.6
 
Attack Vector Adjacent Attack Complexity High
Privileges Required None User Interaction None
Scope Changed Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-40547

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-125 Out-of-bounds Read

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 3

Sources (Detail)

http://www.openwall.com/lists/oss-security/2024/01/26/1
https://access.redhat.com/errata/RHSA-2024:1834
https://access.redhat.com/errata/RHSA-2024:1835
https://access.redhat.com/errata/RHSA-2024:1873
https://access.redhat.com/errata/RHSA-2024:1876
https://access.redhat.com/errata/RHSA-2024:1883
https://access.redhat.com/security/cve/CVE-2023-40547
https://bugzilla.redhat.com/show_bug.cgi?id=2234589
Source Url

Alert History

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Date Informations
2024-04-18 09:27:43
  • Multiple Updates
2024-04-16 21:27:40
  • Multiple Updates
2024-03-27 00:27:40
  • Multiple Updates
2024-02-19 17:27:41
  • Multiple Updates
2024-02-09 00:27:40
  • Multiple Updates
2024-02-08 21:27:42
  • Multiple Updates
2024-02-07 21:27:34
  • Multiple Updates
2024-02-02 21:27:32
  • Multiple Updates
2024-01-27 00:27:25
  • Multiple Updates
2024-01-26 00:27:23
  • Multiple Updates
2024-01-25 21:27:23
  • First insertion