CVE-2021-21282: high-severity vulnerability in contiki-ng
Buffer overflow in RPL source routing header processing
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.6epss 1.0%
Contiki-NG is an open-source, cross-platform operating system for internet of things devices. In versions prior to 4.5, buffer overflow can be triggered by an input packet when using either of Contiki-NG's two RPL implementations in source-routing mode. The problem has been patched in Contiki-NG 4.5. Users can apply the patch for this vulnerability out-of-band as a workaround.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Affected products
contiki-ng · contiki-ngRelated CVEs — contiki-ng
In the same product, most dangerous first.
CVE-2022-35927HIGHUnverified DIO prefix info lengths in RPL-Classic in Contiki-NGEPSS 2.2%CVE-2021-32771HIGHBuffer overflow in contiki-ngEPSS 1.4%CVE-2022-35926MEDIUMOut-of-bounds read in IPv6 neighbor solicitation in Contiki-NGEPSS 1.3%CVE-2021-21410HIGHOut-of-bounds read in the 6LoWPAN implementationEPSS 1.2%CVE-2021-21257HIGHOut-of-bounds write in RPL-Classic and RPL-LiteEPSS 1.1%CVE-2021-21280HIGHOut-of-bounds write when processing 6LoWPAN extension headersEPSS 1.1%