CVE-2021-21280

Contiki-NG is an open-source, cross-platform operating system for internet of things devices. It is possible to cause an out-of-bounds write in versions of Contiki-NG prior to 4.6 when transmitting a 6LoWPAN packet with a chain of extension headers. Unfortunately, the written header is not checked to be within the available space, thereby making it possible to write outside the buffer. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/contiki-ng/contiki-ng/pull/1409	Patch Third Party Advisory
https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-r768-hrhf-v592	Exploit Patch Third Party Advisory

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Configurations

Configuration 1 (hide)

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

Information

Published : 2021-06-18 14:15

Updated : 2021-06-22 12:25

NVD link : CVE-2021-21280

Mitre link : CVE-2021-21280

JSON object : View

CWE

CWE-787

Out-of-bounds Write

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Products Affected

contiki-ng

contiki-ng

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