CVE-2023-23609
First published: Thu Jan 26 2023(Updated: )
Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. Versions prior to and including 4.8 are vulnerable to an out-of-bounds write that can occur in the BLE-L2CAP module. The Bluetooth Low Energy - Logical Link Control and Adaptation Layer Protocol (BLE-L2CAP) module handles fragmentation of packets up the configured MTU size. When fragments are reassembled, they are stored in a packet buffer of a configurable size, but there is no check to verify that the packet buffer is large enough to hold the reassembled packet. In Contiki-NG's default configuration, it is possible that an out-of-bounds write of up to 1152 bytes occurs. The vulnerability has been patched in the "develop" branch of Contiki-NG, and will be included in release 4.9. The problem can be fixed by applying the patch in Contiki-NG pull request #2254 prior to the release of version 4.9.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Contiki-NG | <=4.8 |
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Reference Links
Frequently Asked Questions
What is CVE-2023-23609?
CVE-2023-23609 is a vulnerability in Contiki-NG that allows an out-of-bounds write in the BLE-L2CAP module.
How severe is CVE-2023-23609?
CVE-2023-23609 has a severity score of 7.4 (high).
Which versions of Contiki-NG are affected by CVE-2023-23609?
Versions prior to and including 4.8 of Contiki-NG are vulnerable to CVE-2023-23609.
How can I fix CVE-2023-23609?
To fix CVE-2023-23609, you should update Contiki-NG to a version that is later than 4.8.
Where can I find more information about CVE-2023-23609?
You can find more information about CVE-2023-23609 on the GitHub pull request and security advisories: [GitHub Pull Request](https://github.com/contiki-ng/contiki-ng/pull/2254) and [Security Advisory](https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-qr4q-6h3m-h3g7).
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