CVE-2021-3323

Public Exploit
Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr

Description

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

Category

8.3
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.41%
Third-Party Advisory github.com
Affected: zephyrproject-rtos zephyr
Published at:
Updated at:

References

Link Tags
http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc exploit third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-3323?
CVE-2021-3323 has been scored as a high severity vulnerability.
How to fix CVE-2021-3323?
To fix CVE-2021-3323, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-3323 being actively exploited in the wild?
It is possible that CVE-2021-3323 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-3323?
CVE-2021-3323 affects zephyrproject-rtos zephyr.
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