CVE-2023-24818: RIOT-OS vulnerable to null pointer dereference during fragment forwarding
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 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.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Riot-os Riot | <2022.10 |
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Reference Links
- https://github.com/RIOT-OS/RIOT/pull/18817/commits/0bec3e245ed3815ad6c8cae54673f0021777768b
- https://github.com/RIOT-OS/RIOT/pull/18817/commits/17c70f7ee0b1445f2941f516f264ed4a096e82b7
- https://github.com/RIOT-OS/RIOT/pull/18817/commits/aa27ed71fa3e5d48dee1748dcf27b6323ec98a33
- https://github.com/RIOT-OS/RIOT/pull/18820/commits/4b23d93868a28edd8ebf2ff4ebe94540f2475008
- https://github.com/RIOT-OS/RIOT/pull/18820/commits/f4df5b4c4f841ccb460930894cf68ab10b55b971
- https://github.com/RIOT-OS/RIOT/pull/18820/commits/f4fb746d1acaacc962daeed3aa71aadfe307d20e
- https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-69h9-vj5r-xcg6
Frequently Asked Questions
What is the severity of CVE-2023-24818?
CVE-2023-24818 is classified as a medium severity vulnerability due to its potential impact on device stability and operation.
How do I fix CVE-2023-24818?
To fix CVE-2023-24818, upgrade to Riot-OS version 2022.10 or later.
What can an attacker do with CVE-2023-24818?
An attacker can exploit CVE-2023-24818 by sending a crafted 6LoWPAN frame, leading to a NULL pointer dereference and potential device instability.
Which versions of Riot-OS are affected by CVE-2023-24818?
Riot-OS versions prior to 2022.10 are affected by CVE-2023-24818.
Is CVE-2023-24818 related to IoT security?
Yes, CVE-2023-24818 impacts the security and stability of Internet of Things devices running the affected versions of Riot-OS.
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