CVE-2021-21410
Last modified
CVE-2021-21410 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An out-of-bounds read can be triggered by 6LoWPAN packets sent to devices running Contiki-NG 4.6 and prior. EPSS estimates a 1.23% chance of exploitation in the next 30 days.
Description
Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An out-of-bounds read can be triggered by 6LoWPAN packets sent to devices running Contiki-NG 4.6 and prior. The IPv6 header decompression function (<code>uncompress_hdr_iphc</code>) does not perform proper boundary checks when reading from the packet buffer. Hence, it is possible to construct a compressed 6LoWPAN packet that will read more bytes than what is available from the packet buffer. As of time of publication, there is not a release with a patch available. Users can apply the patch for this vulnerability out-of-band as a workaround.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Contiki-Ng | Contiki-Ng | <= 4.6 |
References
- https://github.com/contiki-ng/contiki-ng/pull/1482Patch, Third Party Advisory
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-hhwj-2p59-v8p9Patch, Third Party Advisory
- https://github.com/contiki-ng/contiki-ng/pull/1482Patch, Third Party Advisory
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-hhwj-2p59-v8p9Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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