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CVE-2024-45779— Grub2: fs/bfs: integer overflow leads to heap oob read in the bfs parser

Quick assessment

Affected
CVE-2024-45779
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.

GNU GRUB是GNU社区的一款Linux系统引导程序。 GNU GRUB存在安全漏洞，该漏洞源于在grub2的BFS文件系统驱动程序中发现整数溢出缺陷。

CVSS 6.0 · Medium EPSS 0.29% · P20

Affected Version Matrix 6

VendorProduct Version RangeStatus
None None ≤ 2.12 affected
Red Hat Red Hat Enterprise Linux 10 any unaffected
Red Hat Red Hat Enterprise Linux 7 any unaffected
Red Hat Red Hat Enterprise Linux 8 any unaffected
Red Hat Red Hat Enterprise Linux 9 any unaffected
Red Hat Red Hat OpenShift Container Platform 4 any unaffected

I. Basic Information for CVE-2024-45779

Vulnerability Information
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Vulnerability Title
Grub2: fs/bfs: integer overflow leads to heap oob read in the bfs parser
Source: CVE Program / CVE List V5
Vulnerability Description
An integer overflow flaw was found in the BFS file system driver in grub2. When reading a file with an indirect extent map, grub2 fails to validate the number of extent entries to be read. A crafted or corrupted BFS filesystem may cause an integer overflow during the file reading, leading to a heap of bounds read. As a consequence, sensitive data may be leaked, or grub2 will crash.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
GNU GRUB 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU GRUB是GNU社区的一款Linux系统引导程序。 GNU GRUB存在安全漏洞，该漏洞源于在grub2的BFS文件系统驱动程序中发现整数溢出缺陷。
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
- - 0 ~ 2.12 -
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2024-45779

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III. Intelligence Information for CVE-2024-45779

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Vendor Advisories for CVE-2024-45779 (2)

Mailing List Discussions for CVE-2024-45779 (1)

IV. Related Vulnerabilities

Same weakness: CWE-190

V. Comments for CVE-2024-45779

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