Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| contiki-ng / contiki-ng | affected <= 4.9 |
CWE
CWE-125
References
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-qjj3-gqx7-438w
- https://github.com/contiki-ng/contiki-ng/pull/2936
ADP enrichment
No English description supplied.
No references supplied.