Buffer overflow in contiki-ng
CVE-2021-32771

8.1HIGH

Key Information:

Vendor

Contiki-ng

Status
Contiki-ng
Vendor
CVE Published:
4 August 2022

What is CVE-2021-32771?

Contiki-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.

Affected Version(s)

contiki-ng < 4.8

References

https://github.com/contiki-ng/contiki-ng/security/advisor...
x_refsource_CONFIRM
https://github.com/contiki-ng/contiki-ng/pull/1615
x_refsource_MISC
https://github.com/contiki-ng/contiki-ng/pull/1615/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

.