CVE-2023-40547

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Source
https://cve.org/CVERecord?id=CVE-2023-40547
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-40547.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-40547
Downstream
AZL (5)
BELL (1)
CLSA (5)
DEBIAN (1)
OESA (6)
RHSA (9)
SUSE (4)
UBUNTU (1)
Related
ALSA (2)
SUSE (4)
Published
2024-01-25T15:54:23Z
Modified
2026-10-21T02:49:58Z
Severity
  • 8.3 (High) CVSS_V3 - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
Shim: rce in http boot support may lead to secure boot bypass
Details

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.

Database specific 
{
    "cna_assigner":  "redhat",
    "cwe_ids":  [
        "CWE-787"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/40xxx/CVE-2023-40547.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "fixed":  "0:15.8-3.el7"
                        },
                        {
                            "fixed":  "0:15.8-1.el7"
                        },
                        {
                            "fixed":  "0:15.8-4.el8_9"
                        },
                        {
                            "fixed":  "0:15.8-2.el8_2"
                        },
                        {
                            "fixed":  "0:15.8-2.el8_2"
                        },
                        {
                            "fixed":  "0:15.8-2.el8_2"
                        },
                        {
                            "fixed":  "0:15.8-2.el8_4"
                        },
                        {
                            "fixed":  "0:15.8-2.el8_4"
                        },
                        {
                            "fixed":  "0:15.8-2.el8_4"
                        },
                        {
                            "fixed":  "0:15.8-2.el8_6"
                        },
                        {
                            "fixed":  "0:15.8-2.el8"
                        },
                        {
                            "fixed":  "0:15.8-2.el8"
                        },
                        {
                            "fixed":  "0:15.8-4.el9_3"
                        },
                        {
                            "fixed":  "0:15.8-3.el9"
                        },
                        {
                            "fixed":  "0:15.8-2.el9"
                        },
                        {
                            "fixed":  "0:15.8-2.el9"
                        },
                        {
                            "fixed":  "0:15.8-3.el9_2"
                        }
                    ],
                    "source":  "AFFECTED_FIELD",
                    "strategy":  "InverseAffectedRanges"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/rhboot/shim

Affected ranges

Type
GIT
Repo
https://github.com/rhboot/shim
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
5914984a1ffeab841f482c791426d7ca9935a5e6
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:redhat:shim:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "15.8"
                }
            ],
            "source":  "CPE_RANGE"
        }
    ]
}

Affected versions

0.*
0.3
0.4
0.5
0.7
0.8
0.9
Other
11
12
13
14
15
15.*
15.2
15.3
15.4
15.5
15.5-rc2
15.6
15.6-rc2
15.7
shim-15.*
shim-15.3-rc1
shim-15.3-rc2
shim-15.3-rc3
shim-15.3-rc4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-40547.json"