CVE-2021-32771

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Summary

CVECVE-2021-32771
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-08-04 21:15:00 UTC
Updated2022-08-10 18:08:00 UTC
DescriptionContiki-NG is an open-source, cross-platform operating system for IoT devices. In affected versions it is possible to cause a buffer overflow when copying an IPv6 address prefix in the RPL-Classic implementation in Contiki-NG. In order to trigger the vulnerability, the Contiki-NG system must have joined an RPL DODAG. After that, an attacker can send a DAO packet with a Target option that contains a prefix length larger than 128 bits. The problem was fixed after the release of Contiki-NG 4.7. Users unable to upgrade may apply the patch in Contiki-NG PR #1615.

Risk And Classification

Problem Types: CWE-120

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Contiki-ng Contiki-ng All All All All

References

ReferenceSourceLinkTags
Check RPL Target prefix length and buffer boundary. by nvt · Pull Request #1615 · contiki-ng/contiki-ng · GitHub MISC github.com
Release Version 4.8 · contiki-ng/contiki-ng · GitHub MISC github.com
Buffer overflow caused by incorrect RPL DAO prefix lengths · Advisory · contiki-ng/contiki-ng · GitHub CONFIRM github.com
Check RPL Target prefix length and buffer boundary. by nvt · Pull Request #1615 · contiki-ng/contiki-ng · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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