Out-of-bounds read in Contiki-NG

1) Out-of-bounds read

EUVDB-ID: #VU54355

Risk: Medium

CVSSv3.1: 5.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-21410

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the 6LoWPAN implementation. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Contiki-NG: 2.0 - 4.6

External links

http://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-hhwj-2p59-v8p9
http://github.com/contiki-ng/contiki-ng/pull/1482

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.