Vulnerability · Published Nov 27, 2024 · Assigned by GitHub_M

CVE-2024-41126Out-of-bounds read when decoding SNMP messages 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).

Severity (CVSS 3.1)8.4High

Exploit odds (30 days)0.3%top 77.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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-message.c module, where the snmp_message_decode function fails to check the boundary of the message buffer when reading a byte from it immediately after decoding an object identifier (OID). The problem has been patched in Contiki-NG pull request 2937. It will be included in the next release of Contiki-NG. Users are advised to either 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-444j-93j3-5gj4 x_refsource_CONFIRM
https://github.com/contiki-ng/contiki-ng/pull/2937 x_refsource_MISC