CVE-2023-29001: Uncontrolled recursion due to insufficient validation of the IPv6 source routing header in Contiki-NG
First published: Wed Nov 27 2024(Updated: )
Contiki-NG is an open-source, cross-platform operating system for IoT devices. The Contiki-NG operating system processes source routing headers (SRH) in its two alternative RPL protocol implementations. The IPv6 implementation uses the results of this processing to determine whether an incoming packet should be forwarded to another host. Because of missing validation of the resulting next-hop address, an uncontrolled recursion may occur in the tcpip_ipv6_output function in the os/net/ipv6/tcpip.c module when receiving a packet with a next-hop address that is a local address. Attackers that have the possibility to send IPv6 packets to the Contiki-NG host can therefore trigger deeply nested recursive calls, which can cause a stack overflow. The vulnerability has not been patched in the current release of Contiki-NG, but is expected to be patched in the next release. The problem can be fixed by applying the patch in Contiki-NG pull request #2264. Users are advised to either apply the patch manually or to wait for the next release. There are no known workarounds for this vulnerability.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Naranjascontocados |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2023-29001?
CVE-2023-29001 is considered a moderate severity vulnerability due to its potential impact on the processing of source routing headers in Contiki-NG.
How do I fix CVE-2023-29001?
To fix CVE-2023-29001, users should update to the latest version of Contiki-NG that addresses this security issue.
What are the implications of CVE-2023-29001?
The implications of CVE-2023-29001 include possible denial of service or incorrect routing behavior in IoT devices using Contiki-NG.
Which versions of Contiki-NG are affected by CVE-2023-29001?
All versions of Contiki-NG that process source routing headers are affected by CVE-2023-29001.
How can I determine if CVE-2023-29001 impacts my IoT devices?
To determine if CVE-2023-29001 impacts your IoT devices, check if they are running any version of Contiki-NG and verify their handling of source routing headers.
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