CVE-2024-41125 Out-of-bounds read in SNMP when decoding a string in Contiki-NG
An attacker can read one byte of memory out-of-bounds via a crafted SNMP packet in Contiki-NG, potentially exposing sensitive data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-41125?
CVE-2024-41125 is a high-severity vulnerability in contiki-ng, published on 27 Nov 2024. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-125
Which versions are affected by CVE-2024-41125?
It affects 1 product.
Products include Contiki-Ng Contiki-Ng.
How do I fix CVE-2024-41125?
No fix has been published for CVE-2024-41125 yet. Limit exposure of the affected software until one is available.
Is CVE-2024-41125 being exploited?
There is no known exploitation of CVE-2024-41125 in the wild and no public exploit code.
Other vulnerabilities in contiki-ng
Sources
Also known as GHSA-qjj3-gqx7-438w.