CVE-2023-33973: RIOT-OS vulnerable to NULL pointer dereference during NHC encoding
RIOT-OS, an operating system for Internet of Things (IoT) devices, contains a network stack with the ability to process 6LoWPAN frames. In versions 2023.01 and prior, an attacker can send a crafted frame which is forwarded by the device. During encoding of the packet a NULL pointer dereference occurs. This crashes the device leading to denial of service. A patch is available at pull request 19678. There are no known workarounds.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
RIOT-OSto a version that resolves this vulnerability.Patch 19678
Event History
Frequently Asked Questions
What is the severity of CVE-2023-33973?
CVE-2023-33973 has been classified as a high severity vulnerability due to its potential exploitation by attackers.
How do I fix CVE-2023-33973?
To fix CVE-2023-33973, upgrade to a version of RIOT-OS later than 2023.01.
What impact does CVE-2023-33973 have on RIOT-OS?
CVE-2023-33973 allows attackers to exploit a NULL pointer dereference in the network stack when processing crafted 6LoWPAN frames.
Which versions of RIOT-OS are affected by CVE-2023-33973?
Versions of RIOT-OS up to and including 2023.01 are affected by CVE-2023-33973.
Can CVE-2023-33973 be exploited remotely?
Yes, CVE-2023-33973 can be exploited remotely as it involves network packet processing.