CVE-2024-41125

Out-of-bounds read in SNMP when decoding a string in Contiki-NG

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.

Category

8.3
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.03%
Vendor Advisory github.com
Affected: contiki-ng contiki-ng
Published at:
Updated at:

References

Link Tags
https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-qjj3-gqx7-438w vendor advisory
https://github.com/contiki-ng/contiki-ng/pull/2936 patch issue tracking

Frequently Asked Questions

What is the severity of CVE-2024-41125?
CVE-2024-41125 has been scored as a high severity vulnerability.
How to fix CVE-2024-41125?
To fix CVE-2024-41125, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-41125 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-41125 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-41125?
CVE-2024-41125 affects contiki-ng contiki-ng.
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