CVE Vulnerability

CVE-2021-21410

Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An out-of-bounds read can be triggered by 6LoWPAN packets sent to devices running Contiki-NG 4.6 and prior. The IPv6 header decompression function (uncompress_hdr_iphc) does not perform proper boundary checks when reading from the packet buffer. Hence, it is possible to construct a compressed 6LoWPAN packet that will read more bytes than what is available from the packet buffer. As of time of publication, there is not a release with a patch available. Users can apply the patch for this vulnerability out-of-band as a workaround.

6.4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 4.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact PARTIAL

Scope

9.1 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-hhwj-2p59-v8p9 Patch Third Party Advisory
https://github.com/contiki-ng/contiki-ng/pull/1482 Patch Third Party Advisory
Configurations

Configuration 1

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

Published : 2021-06-18 09:15

Updated : 2021-06-24 07:27

NVD link : CVE-2021-21410

Mitre link : CVE-2021-21410

Products Affected
No products.
CWE
CWE-125

Out-of-bounds Read