Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 60.7%
CVSS Severity
CVSS v3 Score 8.6
CVSS v2 Score 7.5
References
Products affected by CVE-2021-21280
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cpe:2.3:o:contiki-ng:contiki-ng:-
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cpe:2.3:o:contiki-ng:contiki-ng:2.0
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cpe:2.3:o:contiki-ng:contiki-ng:2.1
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cpe:2.3:o:contiki-ng:contiki-ng:2.2
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cpe:2.3:o:contiki-ng:contiki-ng:2.2.1
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cpe:2.3:o:contiki-ng:contiki-ng:2.2.2
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cpe:2.3:o:contiki-ng:contiki-ng:2.2.3
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cpe:2.3:o:contiki-ng:contiki-ng:2.3
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cpe:2.3:o:contiki-ng:contiki-ng:2.4
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cpe:2.3:o:contiki-ng:contiki-ng:2.5
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cpe:2.3:o:contiki-ng:contiki-ng:2.6
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cpe:2.3:o:contiki-ng:contiki-ng:2.7
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cpe:2.3:o:contiki-ng:contiki-ng:3.0
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cpe:2.3:o:contiki-ng:contiki-ng:4.0
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cpe:2.3:o:contiki-ng:contiki-ng:4.1
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cpe:2.3:o:contiki-ng:contiki-ng:4.2
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cpe:2.3:o:contiki-ng:contiki-ng:4.3
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cpe:2.3:o:contiki-ng:contiki-ng:4.4
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cpe:2.3:o:contiki-ng:contiki-ng:4.5