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This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Description
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.
Metrics
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Red Hat, Inc. http://www.openwall.com/lists/oss-security/2024/01/26/1
Removed
Reference
Red Hat, Inc. https://lists.debian.org/debian-lts-announce/2024/05/msg00009.html
CVE Modified by Red Hat, Inc.6/10/2024 2:15:22 PM
Action
Type
Old Value
New Value
Added
Reference
Red Hat, Inc. https://lists.debian.org/debian-lts-announce/2024/05/msg00009.html [No types assigned]
CVE Modified by Red Hat, Inc.5/14/2024 9:39:23 AM
Action
Type
Old Value
New Value
CVE Modified by Red Hat, Inc.4/30/2024 8:15:45 AM
Action
Type
Old Value
New Value
Added
CWE
Red Hat, Inc. CWE-787
Removed
CWE
Red Hat, Inc. CWE-125
CVE Modified by Red Hat, Inc.4/29/2024 10:15:07 AM
Action
Type
Old Value
New Value
Added
Reference
Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:2086 [No types assigned]
CVE Modified by Red Hat, Inc.4/25/2024 10:15:08 AM
Action
Type
Old Value
New Value
Added
Reference
Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1902 [No types assigned]
Added
Reference
Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1903 [No types assigned]
Added
Reference
Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1959 [No types assigned]
CVE Modified by Red Hat, Inc.4/18/2024 12:15:09 AM
Action
Type
Old Value
New Value
Added
Reference
Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1873 [No types assigned]
Added
Reference
Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1876 [No types assigned]
Added
Reference
Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1883 [No types assigned]
CVE Modified by Red Hat, Inc.4/16/2024 12:15:07 PM
Action
Type
Old Value
New Value
Added
Reference
Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1834 [No types assigned]
Added
Reference
Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1835 [No types assigned]
CVE Modified by Red Hat, Inc.3/26/2024 12:15:08 PM
Action
Type
Old Value
New Value
Added
CWE
Red Hat, Inc. CWE-125
Removed
CWE
Red Hat, Inc. CWE-787
CVE Modified by Red Hat, Inc.2/19/2024 6:15:07 AM
Action
Type
Old Value
New Value
Added
CWE
Red Hat, Inc. CWE-787
Removed
CWE
Red Hat, Inc. CWE-346
Modified Analysis by NIST2/08/2024 2:25:40 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
NIST AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Removed
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added
CWE
NIST CWE-346
CVE Modified by Red Hat, Inc.2/08/2024 12:15:10 PM
Action
Type
Old Value
New Value
Added
CWE
Red Hat, Inc. CWE-346
CVE Modified by Red Hat, Inc.2/07/2024 12:15:09 PM
Action
Type
Old Value
New Value
Changed
Description
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.
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 success
Initial Analysis by NIST2/02/2024 11:53:32 AM
Action
Type
Old Value
New Value
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added
CWE
NIST CWE-787
Added
CPE Configuration
OR
*cpe:2.3:a:redhat:shim:*:*:*:*:*:*:*:* versions up to (excluding) 15.8
Added
CPE Configuration
OR
*cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
Changed
Reference Type
http://www.openwall.com/lists/oss-security/2024/01/26/1 No Types Assigned
http://www.openwall.com/lists/oss-security/2024/01/26/1 Mailing List, Patch, Third Party Advisory
Changed
Reference Type
https://access.redhat.com/security/cve/CVE-2023-40547 No Types Assigned
Red Hat, Inc. http://www.openwall.com/lists/oss-security/2024/01/26/1 [No types assigned]
New CVE Received from Red Hat, Inc.1/25/2024 11:15:07 AM
Action
Type
Old Value
New Value
Added
Description
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.
Added
CVSS V3.1
Red Hat, Inc. AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Added
Reference
Red Hat, Inc. https://access.redhat.com/security/cve/CVE-2023-40547 [No types assigned]
Added
Reference
Red Hat, Inc. https://bugzilla.redhat.com/show_bug.cgi?id=2234589 [No types assigned]
Quick Info
CVE Dictionary Entry: CVE-2023-40547 NVD
Published Date: 01/25/2024 NVD
Last Modified: 11/21/2024
Source: Red Hat, Inc.
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