CVE-2022-35927: high-severity vulnerability in contiki-ng
Unverified DIO prefix info lengths in RPL-Classic in Contiki-NG
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 2.2%
Contiki-NG is an open-source, cross-platform operating system for IoT devices. In the RPL-Classic routing protocol implementation in the Contiki-NG operating system, an incoming DODAG Information Option (DIO) control message can contain a prefix information option with a length parameter. The value of the length parameter is not validated, however, and it is possible to cause a buffer overflow when copying the prefix in the set_ip_from_prefix function. This vulnerability affects anyone running a Contiki-NG version prior to 4.7 that can receive RPL DIO messages from external parties. To obtain a patched version, users should upgrade to Contiki-NG 4.7 or later. There are no workarounds for this issue.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
contiki-ng · contiki-ngRelated CVEs — contiki-ng
In the same product, most dangerous first.
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%CVE-2021-21282HIGHBuffer overflow in RPL source routing header processingEPSS 1.0%