Vulnerability Description
Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when a packet is received, the Contiki-NG network stack attempts to start the periodic TCP timer if it is a TCP packet with the SYN flag set. But the implementation does not first verify that a full TCP header has been received. Specifically, the implementation attempts to access the flags field from the TCP buffer in the following conditional expression in the `check_for_tcp_syn` function. For this reason, an attacker can inject a truncated TCP packet, which will lead to an out-of-bound read from the packet buffer. As of time of publication, a patched version is not available. As a workaround, one can apply the changes in Contiki-NG pull request #2510 to patch the system.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Contiki-Ng | Contiki-Ng | <= 4.9 |
Related Weaknesses (CWE)
References
- https://github.com/contiki-ng/contiki-ng/pull/2510Issue TrackingPatch
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-6648-m23r-hq8cVendor Advisory
- https://github.com/contiki-ng/contiki-ng/pull/2510Issue TrackingPatch
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-6648-m23r-hq8cVendor Advisory
FAQ
What is CVE-2023-37459?
CVE-2023-37459 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when a packet is received, the Contiki-NG network stack attempts to start the periodic TCP timer if it is a...
How severe is CVE-2023-37459?
CVE-2023-37459 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-37459?
Check the references section above for vendor advisories and patch information. Affected products include: Contiki-Ng Contiki-Ng.