CVE-2024-41125
CVE-2024-41125 is a high-severity vulnerability in Contiki-ng with a CVSS 3.x base score of 8.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: High (CVSS 3.x base score 8.3)
- EPSS exploit prediction: 0% (20th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-39321
- Weakness: CWE-125
- Affected product: Contiki-ng
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2024-41125?
- 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.
- How severe is CVE-2024-41125?
- CVE-2024-41125 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2024-41125 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-41125?
- CVE-2024-41125 affects Contiki-ng. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2024-41125?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2024-41125 have an EU (EUVD) identifier?
- Yes. CVE-2024-41125 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39321.
- When was CVE-2024-41125 published?
- CVE-2024-41125 was published on 2024-11-27 and last updated on 2026-06-17.
References
- https://github.com/contiki-ng/contiki-ng/pull/2936
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-qjj3-gqx7-438w
Affected products (1)
- cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:*
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