CVE Vulnerability

CVE-2021-32771

Contiki-NG is an open-source, cross-platform operating system for IoT devices. In affected versions it is possible to cause a buffer overflow when copying an IPv6 address prefix in the RPL-Classic implementation in Contiki-NG. In order to trigger the vulnerability, the Contiki-NG system must have joined an RPL DODAG. After that, an attacker can send a DAO packet with a Target option that contains a prefix length larger than 128 bits. The problem was fixed after the release of Contiki-NG 4.7. Users unable to upgrade may apply the patch in Contiki-NG PR #1615.

8.1 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/contiki-ng/contiki-ng/pull/1615/commits/587ae59956e00316fd44fd7072ac3a6a07b4b20f Patch Third Party Advisory
https://github.com/contiki-ng/contiki-ng/pull/1615 Patch Third Party Advisory
https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-jqjf-v7v9-xp6w Third Party Advisory
https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.8 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:*
Information

Published : 2022-08-04 09:15

Updated : 2022-08-10 06:08

NVD link : CVE-2021-32771

Mitre link : CVE-2021-32771

Products Affected
No products.
CWE
CWE-120