NVD Vulnerability Detail
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CVE-2023-40548
Summary

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.

Publication Date Jan. 30, 2024, 12:15 a.m.
Registration Date Jan. 30, 2024, 10 a.m.
Last Update Nov. 21, 2024, 5:19 p.m.
CVSS3.1 : HIGH
スコア 7.4
Vector CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
攻撃元区分(AV) ローカル
攻撃条件の複雑さ(AC) 高
攻撃に必要な特権レベル(PR) 不要
利用者の関与(UI) 不要
影響の想定範囲(S) 変更なし
機密性への影響(C) 高
完全性への影響(I) 高
可用性への影響(A) 高
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:redhat:shim:*:*:*:*:*:*:*:* 15.8
cpe:2.3:a:redhat:shim:15.8:rc1:*:*:*:*:*:*
Configuration2 or higher or less more than less than
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List