Vulnerability · Published Nov 27, 2024 · Assigned by GitHub_M
CVE-2024-41125Out-of-bounds read in SNMP when decoding a string in Contiki-NG
High 8.4
In plain English
A high-severity out-of-bounds read 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 0.3% (higher than 22% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| contiki-ng | contiki-ng | <= 4.9 |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
References
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-qjj3-gqx7-438w x_refsource_CONFIRM
- https://github.com/contiki-ng/contiki-ng/pull/2936 x_refsource_MISC