CVE-2023-24821: RIOT-OS vulnerable to Integer Underflow during defragmentation
First published: Mon Apr 24 2023(Updated: )
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.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Riot-os Riot | <2022.10 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2023-24821?
CVE-2023-24821 is considered to have a high severity due to the potential for an out of bounds write which may lead to code execution or system crashes.
How do I fix CVE-2023-24821?
To fix CVE-2023-24821, users should upgrade their RIOT-OS to version 2022.10 or later.
What types of devices are affected by CVE-2023-24821?
CVE-2023-24821 affects Internet of Things devices that run versions of RIOT-OS prior to 2022.10.
What is the exploitation vector for CVE-2023-24821?
The exploitation vector for CVE-2023-24821 is through sending crafted 6LoWPAN frames to the vulnerable device.
Are there any mitigations available for CVE-2023-24821?
The primary mitigation for CVE-2023-24821 is to update the RIOT-OS to a patched version to prevent exploitation.
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