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CVE-2023-5088— Qemu: improper ide controller reset can lead to mbr overwrite

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 8
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

QEMU是法国Fabrice Bellard个人开发者的一套模拟处理器软件。该软件具有速度快、跨平台等特点。hyper是hyperium开源的一个 Rust 的快速、正确的 HTTP 实现。 QEMU存在安全漏洞，该漏洞源于可能会导致原本寻址任意磁盘偏移量的来宾 I/O 操作改为以偏移量 0 为目标，即覆盖 VM 的引导代码。

CVSS 6.4 · Medium EPSS 0.23% · P14
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I. Basic Information for CVE-2023-5088

Vulnerability Information
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Vulnerability Title
Qemu: improper ide controller reset can lead to mbr overwrite
Source: CVE Program / CVE List V5
Vulnerability Description
A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不正确的同步机制
Source: CVE Program / CVE List V5
Vulnerability Title
QEMU 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
QEMU是法国Fabrice Bellard个人开发者的一套模拟处理器软件。该软件具有速度快、跨平台等特点。hyper是hyperium开源的一个 Rust 的快速、正确的 HTTP 实现。 QEMU存在安全漏洞，该漏洞源于可能会导致原本寻址任意磁盘偏移量的来宾 I/O 操作改为以偏移量 0 为目标，即覆盖 VM 的引导代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 8 8100020240314161907.e155f54d ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8 8100020240314161907.e155f54d ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 9 17:8.2.0-11.el9_4 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 Advanced Virtualization - cpe:/a:redhat:advanced_virtualization:8::el8

II. Public POCs for CVE-2023-5088

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III. Intelligence Information for CVE-2023-5088

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Vendor Advisories for CVE-2023-5088 (5)

Other References for CVE-2023-5088 (1)

Same Patch Batch · Red Hat · 2023-11-03 · 5 CVEs total

CVE-2023-3961 9.1 CRITICAL Samba: smbd allows client access to unix domain sockets on the file system as root
CVE-2023-5824 7.5 HIGH Squid: dos against http and https
CVE-2023-1476 7.0 HIGH Kpatch: mm/mremap.c: incomplete fix for cve-2022-41222
CVE-2023-4091 6.5 MEDIUM Samba: smb clients can truncate files with read-only permissions

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 8
Same vendor: Red Hat
Same weakness: CWE-821

V. Comments for CVE-2023-5088

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