Vulnerability · Published Mar 17, 2023 · Assigned by GitHub_M
CVE-2023-28116Buffer overflow in L2CAP due to misconfigured MTU
High 8.1
In plain English
A high-severity buffer overflow in contiki-ng from contiki-ng. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities).
Official description
Contiki-NG is an open-source, cross-platform operating system for internet of things (IoT) devices. In versions 4.8 and prior, an out-of-bounds write can occur in the BLE L2CAP module of the Contiki-NG operating system. The network stack of Contiki-NG uses a global buffer (packetbuf) for processing of packets, with the size of PACKETBUF_SIZE. In particular, when using the BLE L2CAP module with the default configuration, the PACKETBUF_SIZE value becomes larger then the actual size of the packetbuf. When large packets are processed by the L2CAP module, a buffer overflow can therefore occur when copying the packet data to the packetbuf. The vulnerability has been patched in the "develop" branch of Contiki-NG, and will be included in release 4.9. The problem can be worked around by applying the patch manually.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| contiki-ng | contiki-ng | <= 4.8 |
Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-m737-4vx6-pfqp x_refsource_CONFIRM
- https://github.com/contiki-ng/contiki-ng/pull/2398 x_refsource_MISC