Unverified DIO prefix info lengths in RPL-Classic in Contiki-NG
CVE-2022-35927

8.1HIGH

Key Information:

Vendor

Contiki-ng

Status
Contiki-ng
Vendor
CVE Published:
4 August 2022

What is CVE-2022-35927?

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.

Affected Version(s)

contiki-ng < 4.7

References

https://github.com/contiki-ng/contiki-ng/security/advisor...
x_refsource_CONFIRM
https://github.com/contiki-ng/contiki-ng/pull/1589
x_refsource_MISC
https://github.com/contiki-ng/contiki-ng/pull/1589/commit...
x_refsource_MISC

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.