CVE-2023-34101

Contiki-NG vulnerable to out-of-bounds read when processing ICMP DAO input

Description

Contiki-NG is an operating system for internet of things devices. In version 4.8 and prior, when processing ICMP DAO packets in the `dao_input_storing` function, the Contiki-NG OS does not verify that the packet buffer is big enough to contain the bytes it needs before accessing them. Up to 16 bytes can be read out of bounds in the `dao_input_storing` function. An attacker can truncate an ICMP packet so that it does not contain enough data, leading to an out-of-bounds read on these lines. The problem has been patched in the "develop" branch of Contiki-NG, and is expected to be included in release 4.9. As a workaround, one can apply the changes in Contiki-NG pull request #2435 to patch the system.

Category

7.3
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.15%
Vendor Advisory github.com
Affected: contiki-ng contiki-ng
Published at:
Updated at:

References

Link Tags
https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-fp66-ff6x-7w2w vendor advisory
https://github.com/contiki-ng/contiki-ng/pull/2435 patch

Frequently Asked Questions

What is the severity of CVE-2023-34101?
CVE-2023-34101 has been scored as a high severity vulnerability.
How to fix CVE-2023-34101?
To fix CVE-2023-34101, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-34101 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-34101 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-34101?
CVE-2023-34101 affects contiki-ng contiki-ng.
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