Vulnerability · Published May 30, 2023 · Assigned by GitHub_M

CVE-2023-33973RIOT-OS vulnerable to NULL pointer dereference during NHC encoding

High 7.5

In plain English

A high-severity null pointer dereference in RIOT from RIOT-OS. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)1.0%top 38.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
RIOT-OS	RIOT	<= 2023.01

Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

In plain English

Official description

Affected products (as reported)

References