Vulnerability · Published Aug 4, 2022 · Assigned by GitHub_M
CVE-2021-32771Buffer overflow in contiki-ng
High 8.1
In plain English
A high-severity buffer overflow in contiki-ng from contiki-ng. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 72% of all known vulnerabilities).
Official description
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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| contiki-ng | contiki-ng | < 4.8 |
Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-jqjf-v7v9-xp6w x_refsource_CONFIRM
- https://github.com/contiki-ng/contiki-ng/pull/1615 x_refsource_MISC
- https://github.com/contiki-ng/contiki-ng/pull/1615/commits/587ae59956e00316fd44fd7072ac3a6a07b4b20f x_refsource_MISC
- https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.8 x_refsource_MISC