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.

CVSS v3.0 8.1 HIGH

8.1^/10

CVSS v3.0 : HIGH

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

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Configurations

Configuration 1 (hide)

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

Information

Published : 2022-08-04 14:15

Updated : 2022-08-10 11:08

NVD link : CVE-2021-32771

Mitre link : CVE-2021-32771

JSON object : View

CWE

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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Products Affected

contiki-ng

contiki-ng

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