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CVE-2023-24821— RIOT-OS vulnerable to Integer Underflow during defragmentation

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-OS 2022.10之前版本存在数字错误漏洞。攻击者利用该漏洞发送特制的帧，从而导致超出数据包缓冲区的大量越界写入，在到达 RAM 的最后一页后，写入将产生硬故障异常。

CVSS 7.5 · High EPSS 0.86% · P57

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-24821

Vulnerability Information
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Vulnerability Title
RIOT-OS vulnerable to Integer Underflow during defragmentation
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 large out of bounds write beyond the packet buffer. The write will create a hard fault exception after reaching the last page of RAM. The hard fault is not handled and the system will be stuck until reset, thus the impact is 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
整数下溢(超界折返)
Source: CVE Program / CVE List V5
Vulnerability Title
RIOT RIOT-OS 数字错误漏洞
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-OS 2022.10之前版本存在数字错误漏洞。攻击者利用该漏洞发送特制的帧，从而导致超出数据包缓冲区的大量越界写入，在到达 RAM 的最后一页后，写入将产生硬故障异常。
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
RIOT-OS RIOT < 2022.10 -

II. Public POCs for CVE-2023-24821

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III. Intelligence Information for CVE-2023-24821

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Patches & Fixes for CVE-2023-24821 (2)

Vendor Advisories for CVE-2023-24821 (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-2023-24820 7.5 HIGH RIOT-OS vulnerable to Integer Underflow during IPHC receive
CVE-2023-24818 7.5 HIGH RIOT-OS vulnerable to null pointer dereference during fragment forwarding

IV. Related Vulnerabilities

Same product: RIOT
Same vendor: RIOT-OS
Same weakness: CWE-191

V. Comments for CVE-2023-24821

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