CVE-2024-41125 Information

Description

Contiki-NG is an open-source cross-platform operating system for IoT devices. An out-of-bounds read of 1 byte can be triggered when sending a packet to a device running the Contiki-NG operating system with SNMP enabled. The SNMP module is disabled in the default Contiki-NG configuration. The vulnerability exists in the os/net/app-layer/snmp/snmp-ber.c module where the function snmp_ber_decode_string_len_buffer decodes the string length from a received SNMP packet. In one place one byte is read from the buffer without checking that the buffer has another byte available leading to a possible out-of-bounds read. The problem has been patched in Contiki-NG pull request 2936. It will be included in the next release of Contiki-NG. Users are advised to apply the patch manually or to wait for the next release. A workaround is to disable the SNMP module in the Contiki-NG build configuration.

Reference

https://github.com/contiki-ng/contiki-ng/pull/2936 https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-qjj3-gqx7-438w