CVE-2023-40548 Shim: interger overflow leads to heap buffer overflow in verify_sbat_section on 32-bits systems
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.
Problem types: cwe_id: CWE-787
description: Out-of-bounds Write
Affected products: vendor: Red Hat
product: Red Hat Enterprise Linux 7
cpes: cpe:/o:redhat:enterprise_linux:7::server
cpe:/o:redhat:enterprise_linux:7::workstation
cpe:/o:redhat:enterprise_linux:7::client
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 7
cpes: cpe:/o:redhat:enterprise_linux:7::server
cpe:/o:redhat:enterprise_linux:7::workstation
cpe:/o:redhat:enterprise_linux:7::client
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8
cpes: cpe:/o:redhat:enterprise_linux:8::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.2 Advanced Update Support
cpes: cpe:/o:redhat:rhel_e4s:8.2::baseos
cpe:/o:redhat:rhel_aus:8.2::baseos
cpe:/o:redhat:rhel_tus:8.2::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.2 Telecommunications Update Service
cpes: cpe:/o:redhat:rhel_e4s:8.2::baseos
cpe:/o:redhat:rhel_aus:8.2::baseos
cpe:/o:redhat:rhel_tus:8.2::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions
cpes: cpe:/o:redhat:rhel_e4s:8.2::baseos
cpe:/o:redhat:rhel_aus:8.2::baseos
cpe:/o:redhat:rhel_tus:8.2::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
cpes: cpe:/o:redhat:rhel_e4s:8.4::baseos
cpe:/o:redhat:rhel_tus:8.4::baseos
cpe:/o:redhat:rhel_aus:8.4::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.4 Telecommunications Update Service
cpes: cpe:/o:redhat:rhel_e4s:8.4::baseos
cpe:/o:redhat:rhel_tus:8.4::baseos
cpe:/o:redhat:rhel_aus:8.4::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions
cpes: cpe:/o:redhat:rhel_e4s:8.4::baseos
cpe:/o:redhat:rhel_tus:8.4::baseos
cpe:/o:redhat:rhel_aus:8.4::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.6 Extended Update Support
cpes: cpe:/o:redhat:rhel_eus:8.6::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.8 Extended Update Support
cpes: cpe:/a:redhat:rhel_eus:8.8::crb
cpe:/o:redhat:rhel_eus:8.8::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.8 Extended Update Support
cpes: cpe:/a:redhat:rhel_eus:8.8::crb
cpe:/o:redhat:rhel_eus:8.8::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 9
cpes: cpe:/o:redhat:enterprise_linux:9::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 9.0 Extended Update Support
cpes: cpe:/a:redhat:rhel_eus:9.0::appstream
cpe:/a:redhat:rhel_eus:9.0::crb
cpe:/o:redhat:rhel_eus:9.0::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 9.0 Extended Update Support
cpes: cpe:/a:redhat:rhel_eus:9.0::appstream
cpe:/a:redhat:rhel_eus:9.0::crb
cpe:/o:redhat:rhel_eus:9.0::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 9.0 Extended Update Support
cpes: cpe:/a:redhat:rhel_eus:9.0::appstream
cpe:/a:redhat:rhel_eus:9.0::crb
cpe:/o:redhat:rhel_eus:9.0::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 9.2 Extended Update Support
cpes: cpe:/o:redhat:rhel_eus:9.2::baseos
default_status: affected
CVSS v3.1: attackComplexity: HIGH
attackVector: LOCAL
availabilityImpact: HIGH
baseScore: 7.4
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
version: 3.1
Published: 2024-01-29T14:53:44.319Z