CVE-2023-5563
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 Project开源的一个可扩展的实时操作系统 (RTOS)。 Zephyr 3.4.0及之前版本存在安全漏洞，该漏洞源于当使用 CONFIG_CAN_AUTO_BUS_OFF_RECOVERY=y 构建时，SJA1000 CAN 控制器驱动程序后端会自动尝试从总线关闭事件中恢复，导致在 IRQ 上下文中调用 k_sleep()，从而导致致命异常。
Possible ATT&CK Techniques 1 AI
T1529 · System Shutdown/Reboot
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I. Basic Information for CVE-2023-5563
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The SJA1000 CAN controller driver backend automatically attempt to recover from a bus-off event when built with CONFIG_CAN_AUTO_BUS_OFF_RECOVERY=y. This results in calling k_sleep() in IRQ context, causing a fatal exception.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对异常条件检查或处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Zephyr 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zephyr是Zephyr Project开源的一个可扩展的实时操作系统 (RTOS)。 Zephyr 3.4.0及之前版本存在安全漏洞，该漏洞源于当使用 CONFIG_CAN_AUTO_BUS_OFF_RECOVERY=y 构建时，SJA1000 CAN 控制器驱动程序后端会自动尝试从总线关闭事件中恢复，导致在 IRQ 上下文中调用 k_sleep()，从而导致致命异常。
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 | 3.3 ~ 3.4 | - |
|
II. Public POCs for CVE-2023-5563
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2023-5563 (1)
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V. Comments for CVE-2023-5563
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