CVE-2023-40548

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Source
https://cve.org/CVERecord?id=CVE-2023-40548
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-40548.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-40548
Downstream
AZL (5)
BELL (1)
DEBIAN (1)
OESA (4)
RHSA (9)
SUSE (4)
UBUNTU (1)
Related
ALSA (2)
SUSE (4)
Published
2024-01-29T14:53:44Z
Modified
2026-10-21T02:49:58Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Shim: interger overflow leads to heap buffer overflow in verify_sbat_section on 32-bits systems
Details

A buffer overflow was found in Shim in the 32-bit system. The overflow happens due to an addition operation involving a user-controlled value parsed from the PE binary being used by Shim. This value is further used for memory allocation operations, leading to a heap-based buffer overflow. This flaw causes memory corruption and can lead to a crash or data integrity issues during the boot phase.

Database specific 
{
    "cna_assigner":  "redhat",
    "cwe_ids":  [
        "CWE-190"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/40xxx/CVE-2023-40548.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
Introduced
7e5c94dcf1693cec2a653a95e738333187170b33
Last Affected
7e5c94dcf1693cec2a653a95e738333187170b33
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:redhat:shim:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "15.8"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "cpe":  "cpe:2.3:a:redhat:shim:15.8:rc1:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "15.8-rc1"
                },
                {
                    "last_affected":  "15.8-rc1"
                }
            ],
            "source":  "CPE_STRING"
        }
    ]
}

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
15.8-rc1
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-2023-40548.json"