CVE-2024-6443— zephyr: out-of-bound read in utf8_trunc
Quick assessment
Affected
zephyrproject-rtos Zephyr
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.
Zephyr是Zephyr开源的一个可扩展的实时操作系统 (RTOS)。 Zephyr存在安全漏洞，该漏洞源于如果last_byte_p字符串为空，则可以指向字符串指针前一个字节。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2024-6443
Vulnerability Information
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Vulnerability Title
zephyr: out-of-bound read in utf8_trunc
Source: CVE Program / CVE List V5
Vulnerability Description
In utf8_trunc in zephyr/lib/utils/utf8.c, last_byte_p can point to one byte before the string pointer if the string is empty.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Zephyr 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zephyr是Zephyr开源的一个可扩展的实时操作系统 (RTOS)。 Zephyr存在安全漏洞，该漏洞源于如果last_byte_p字符串为空，则可以指向字符串指针前一个字节。
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 |
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr | * ~ 3.6 | - |
|
II. Public POCs for CVE-2024-6443
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · zephyrproject-rtos · 2024-10-04 · 3 CVEs total
| CVE-2024-6444 | 6.3 MEDIUM | Bluetooth: ots: missing buffer length check |
| CVE-2024-6442 | 6.3 MEDIUM | Bluetooth: ASCS Unchecked tailroom of the response buffer |
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