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CVE-2023-24818— RIOT-OS vulnerable to null pointer dereference during fragment forwarding

Quick assessment

Affected
RIOT-OS RIOT
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.

RIOT RIOT-OS是一套应用于物联网领域的操作系统。 RIOT RIOT-OS 2022.10 之前版本存在代码问题漏洞，攻击者利用该漏洞可以向设备发送特制帧，导致空指针解引用，在转发片段期间，未初始化的重组缓冲区条目被使用，空指针解引用触发了硬故障异常，导致拒绝服务。

CVSS 7.5 · High EPSS 1.21% · P68

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-24818

Vulnerability Information
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Vulnerability Title
RIOT-OS vulnerable to null pointer dereference during fragment forwarding
Source: CVE Program / CVE List V5
Vulnerability Description
RIOT-OS, an operating system that supports Internet of Things devices, contains a network stack with the ability to process 6LoWPAN frames. Prior to version 2022.10, an attacker can send a crafted frame to the device resulting in a NULL pointer dereference. During forwarding of a fragment an uninitialized entry in the reassembly buffer is used. The NULL pointer dereference triggers a hard fault exception resulting in denial of service. Version 2022.10 fixes this issue. As a workaround, disable support for fragmented IP datagrams or apply the patches manually.
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
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
RIOT RIOT-OS 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RIOT RIOT-OS是一套应用于物联网领域的操作系统。 RIOT RIOT-OS 2022.10 之前版本存在代码问题漏洞，攻击者利用该漏洞可以向设备发送特制帧，导致空指针解引用，在转发片段期间，未初始化的重组缓冲区条目被使用，空指针解引用触发了硬故障异常，导致拒绝服务。
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
RIOT-OS RIOT < 2022.10 -

II. Public POCs for CVE-2023-24818

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III. Intelligence Information for CVE-2023-24818

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Patches & Fixes for CVE-2023-24818 (6)

Vendor Advisories for CVE-2023-24818 (1)

Same Patch Batch · RIOT-OS · 2023-04-24 · 6 CVEs total

CVE-2023-24823 9.8 CRITICAL RIOT-OS vulnerable to Packet Type Confusion during IPHC send
CVE-2023-24819 9.8 CRITICAL RIOT-OS vulnerable to Buffer Overflow during IPHC receive
CVE-2023-24822 7.5 HIGH RIOT-OS vulnerable to Null Pointer dereference during IPHC encoding
CVE-2023-24821 7.5 HIGH RIOT-OS vulnerable to Integer Underflow during defragmentation
CVE-2023-24820 7.5 HIGH RIOT-OS vulnerable to Integer Underflow during IPHC receive

IV. Related Vulnerabilities

Same product: RIOT
Same vendor: RIOT-OS
Same weakness: CWE-476

V. Comments for CVE-2023-24818

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