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CVE-2022-35927— Unverified DIO prefix info lengths in RPL-Classic in Contiki-NG

Quick assessment

Affected
contiki-ng contiki-ng
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.

Contiki-NG是一套用于下一代IoT（物联网）设备的开源跨平台操作系统。 Contiki-NG 4.7之前版本存在安全漏洞，该漏洞源于在 Contiki-NG 操作系统中的 RPL-Classic 路由协议实现中，传入的 DODAG 信息选项 (DIO)控制消息的长度参数的值未经过验证，攻击者利用该漏洞可以导致缓冲区溢出。

CVSS 8.1 · High EPSS 2.05% · P80

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2022-35927

Vulnerability Information
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Vulnerability Title
Unverified DIO prefix info lengths in RPL-Classic in Contiki-NG
Source: CVE Program / CVE List V5
Vulnerability Description
Contiki-NG is an open-source, cross-platform operating system for IoT devices. In the RPL-Classic routing protocol implementation in the Contiki-NG operating system, an incoming DODAG Information Option (DIO) control message can contain a prefix information option with a length parameter. The value of the length parameter is not validated, however, and it is possible to cause a buffer overflow when copying the prefix in the set_ip_from_prefix function. This vulnerability affects anyone running a Contiki-NG version prior to 4.7 that can receive RPL DIO messages from external parties. To obtain a patched version, users should upgrade to Contiki-NG 4.7 or later. There are no workarounds for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Contiki-NG 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Contiki-NG是一套用于下一代IoT（物联网）设备的开源跨平台操作系统。 Contiki-NG 4.7之前版本存在安全漏洞，该漏洞源于在 Contiki-NG 操作系统中的 RPL-Classic 路由协议实现中，传入的 DODAG 信息选项 (DIO)控制消息的长度参数的值未经过验证，攻击者利用该漏洞可以导致缓冲区溢出。
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
contiki-ng contiki-ng < 4.7 -

II. Public POCs for CVE-2022-35927

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III. Intelligence Information for CVE-2022-35927

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Patches & Fixes for CVE-2022-35927 (2)

Vendor Advisories for CVE-2022-35927 (1)

Same Patch Batch · contiki-ng · 2022-08-04 · 3 CVEs total

CVE-2021-32771 8.1 HIGH Buffer overflow in contiki-ng
CVE-2022-35926 5.9 MEDIUM Out-of-bounds read in IPv6 neighbor solicitation in Contiki-NG

IV. Related Vulnerabilities

Same product: contiki-ng
Same vendor: contiki-ng
Same weakness: CWE-120

V. Comments for CVE-2022-35927

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