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 (uncompress_hdr_iphc) 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.
CVE-2021-21410
Published Date: 2021-06-18T21:15Z
Last Modified: 2021-06-24T19:27Z
CVSS Score: 9.1 (CRITICAL)
EPSS Score: 0.18%
Risk Score: 6.37 (HIGH)
Risk Score based on CVSS score and EPSS. This score is for reference purposes and is not internationally recognized.
CVSS:
9.1 |
EPSS:
0.18%
Mitre ATT&CK Technical v15.1
T1153 – Source
T1053.002 – At
Technical Analysis & Mitigation Measures
Reference Links
Vendor - Produce - Version
contiki-ng - contiki-ng
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