CVE-2021-3323: Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr
First published: Tue Oct 12 2021(Updated: )
Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr. Zephyr versions >= >=2.4.0 contain Integer Underflow (Wrap or Wraparound) (CWE-191). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc
Credit: vulnerabilities@zephyrproject.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zephyrproject Zephyr | >=2.4.0<2.5.0 |
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Frequently Asked Questions
What is CVE-2021-3323?
CVE-2021-3323 is an integer underflow vulnerability in 6LoWPAN IPHC header uncompression in Zephyr.
What software versions are affected by CVE-2021-3323?
Zephyr versions >=2.4.0 and <2.5.0 are affected by CVE-2021-3323.
How severe is CVE-2021-3323?
CVE-2021-3323 has a severity rating of 9.8 (Critical).
What is the Common Weakness Enumeration (CWE) ID for CVE-2021-3323?
CVE-2021-3323 is categorized as CWE-191 (Integer Underflow).
Where can I find more information about CVE-2021-3323?
You can find more information about CVE-2021-3323 at the following link: http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc
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