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CVE-2020-10067— Integer Overflow In is_in_region Allows User Thread To Access Kernel Memory

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 1.14.0及之后版本（1.14.2版本已修复）和2.1.0及之后版本（2.2.0版本已修复）中的is_in_region存在输入验证错误漏洞。攻击者可利用该漏洞绕过系统调用处理程序执行的安全检查，可能造成拒绝服务，获取信息或损坏内存等危害。

CVSS 7.5 · High EPSS 0.45% · P37
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I. Basic Information for CVE-2020-10067

Vulnerability Information
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Vulnerability Title
Integer Overflow In is_in_region Allows User Thread To Access Kernel Memory
Source: CVE Program / CVE List V5
Vulnerability Description
A malicious userspace application can cause a integer overflow and bypass security checks performed by system call handlers. The impact would depend on the underlying system call and can range from denial of service to information leak to memory corruption resulting in code execution within the kernel. See NCC-ZEP-005 This issue affects: zephyrproject-rtos zephyr version 1.14.1 and later versions. version 2.1.0 and later versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/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
Zephyr 输入验证错误漏洞
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 1.14.0及之后版本（1.14.2版本已修复）和2.1.0及之后版本（2.2.0版本已修复）中的is_in_region存在输入验证错误漏洞。攻击者可利用该漏洞绕过系统调用处理程序执行的安全检查，可能造成拒绝服务，获取信息或损坏内存等危害。
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 1.14.1 ~ unspecified -

II. Public POCs for CVE-2020-10067

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III. Intelligence Information for CVE-2020-10067

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Patches & Fixes for CVE-2020-10067 (3)

Other References for CVE-2020-10067 (2)

Same Patch Batch · zephyrproject-rtos · 2020-05-11 · 11 CVEs total

CVE-2020-10022 9.0 CRITICAL UpdateHub Module Copies a Variable-Size Hash String Into a Fixed-Size Array
CVE-2020-10019 8.1 HIGH Buffer Overflow in USB DFU requested length
CVE-2020-10021 8.1 HIGH Out-of-bounds write in USB Mass Storage with unaligned sizes
CVE-2020-10060 8.0 HIGH UpdateHub Might Dereference An Uninitialized Pointer
CVE-2020-10024 7.8 HIGH ARM Platform Uses Signed Integer Comparison When Validating Syscall Numbers
CVE-2020-10027 7.8 HIGH ARC Platform Uses Signed Integer Comparison When Validating Syscall Numbers
CVE-2020-10028 7.8 HIGH Multiple Syscalls In GPIO Subsystem Performs No Argument Validation
CVE-2020-10058 7.8 HIGH Multiple Syscalls In kscan Subsystem Performs No Argument Validation
CVE-2020-10023 6.9 MEDIUM Shell Subsystem Contains a Buffer Overflow Vulnerability In shell_spaces_trim
CVE-2020-10059 4.8 MEDIUM UpdateHub Module Explicitly Disables TLS Verification

IV. Related Vulnerabilities

Same product: zephyr
Same vendor: zephyrproject-rtos
Same weakness: CWE-190

V. Comments for CVE-2020-10067

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