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CVE-2022-2347— Unchecked Download size in Uboot

Quick assessment

Affected
Uboot Uboot
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.

DENX Software Engineering Das U-Boot是德国DENX Software Engineering公司的一个通用引导加载程序。 DENX Software Engineering Das U-Boot 存在安全漏洞，该漏洞源于USB DFU 中未选中的下载大小和方向，攻击者利用该漏洞可以写入超出堆分配的请求缓冲区。

CVSS 7.7 · High EPSS 0.56% · P45

Possible ATT&CK Techniques 1 AI

T1213 · Data from Information Repositories

Affected Version Matrix 1

VendorProduct Version RangeStatus
Uboot Uboot unspecified≤ 2022.07 affected
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I. Basic Information for CVE-2022-2347

Vulnerability Information
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Vulnerability Title
Unchecked Download size in Uboot
Source: CVE Program / CVE List V5
Vulnerability Description
There exists an unchecked length field in UBoot. The U-Boot DFU implementation does not bound the length field in USB DFU download setup packets, and it does not verify that the transfer direction corresponds to the specified command. Consequently, if a physical attacker crafts a USB DFU download setup packet with a `wLength` greater than 4096 bytes, they can write beyond the heap-allocated request buffer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
DENX Software Engineering Das U-Boot 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
DENX Software Engineering Das U-Boot是德国DENX Software Engineering公司的一个通用引导加载程序。 DENX Software Engineering Das U-Boot 存在安全漏洞，该漏洞源于USB DFU 中未选中的下载大小和方向，攻击者利用该漏洞可以写入超出堆分配的请求缓冲区。
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
Uboot Uboot unspecified ~ 2022.07 -

II. Public POCs for CVE-2022-2347

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III. Intelligence Information for CVE-2022-2347

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Mailing List Discussions for CVE-2022-2347 (1)

IV. Related Vulnerabilities

Same weakness: CWE-122

V. Comments for CVE-2022-2347

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