Contiki-NG up to 4.9 SNMP snmp-message.c snmp_message_decode out-of-bounds

Summaryinfo

A vulnerability marked as problematic has been reported in Contiki-NG up to 4.9. Impacted is the function snmp_message_decode of the file os/net/app-layer/snmp/snmp-message.c of the component SNMP Module. Performing a manipulation results in out-of-bounds. This vulnerability is cataloged as CVE-2024-41126. The attack must originate from the local network. There is no exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in Contiki-NG up to 4.9. It has been classified as critical. This affects the function snmp_message_decode of the file os/net/app-layer/snmp/snmp-message.c of the component SNMP Module. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2024-41126 since 07/15/2024. The exploitability is told to be difficult. The attack needs to be initiated within the local network. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• Contiki-NG

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7
• 4.8
• 4.9

License

• open-source

Website

• Product: https://github.com/contiki-ng/contiki-ng/

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