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CVE-2021-3510— Zephyr JSON decoder incorrectly decodes array of array

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是美国Linux基金会的一套开源的小型的可缩放的实时操作系统。 Zephyr 存在安全漏洞，该漏洞源于Zephyr JSON解码器错误地解码数组。

CVSS 7.5 · High EPSS 0.96% · P61

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-3510

Vulnerability Information
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Vulnerability Title
Zephyr JSON decoder incorrectly decodes array of array
Source: CVE Program / CVE List V5
Vulnerability Description
Zephyr JSON decoder incorrectly decodes array of array. Zephyr versions >= >1.14.0, >= >2.5.0 contain Attempt to Access Child of a Non-structure Pointer (CWE-588). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-289f-7mw3-2qf4
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
尝试访问一个非结构体指针的子域
Source: CVE Program / CVE List V5
Vulnerability Title
Zephyr 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zephyr是美国Linux基金会的一套开源的小型的可缩放的实时操作系统。 Zephyr 存在安全漏洞，该漏洞源于Zephyr JSON解码器错误地解码数组。
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 >1.14.0 ~ unspecified -

II. Public POCs for CVE-2021-3510

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III. Intelligence Information for CVE-2021-3510

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Vendor Advisories for CVE-2021-3510 (1)

Same Patch Batch · zephyrproject-rtos · 2021-10-05 · 5 CVEs total

CVE-2021-3625 9.6 CRITICAL Buffer overflow in Zephyr USB DFU DNLOAD
CVE-2021-3581 7.0 HIGH Buffer Access with Incorrect Length Value in zephyr
CVE-2021-3319 6.5 MEDIUM DOS: Incorrect 802154 Frame Validation for Omitted Source / Dest Addresses
CVE-2021-3436 4.3 MEDIUM BT: Possible to overwrite an existing bond during keys distribution phase when the identit

IV. Related Vulnerabilities

Same product: zephyr
Same vendor: zephyrproject-rtos