CVE-2021-3323 Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr
An integer underflow in Zephyr's 6LoWPAN header uncompression allows attackers to cause denial of service or execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-3323?
CVE-2021-3323 is a high-severity vulnerability in Zephyrproject Zephyr, published on 12 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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
Weakness: CWE-191
Which versions are affected by CVE-2021-3323?
It affects 1 product.
Products include Zephyrproject Zephyr.
How do I fix CVE-2021-3323?
No fix has been published for CVE-2021-3323 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-3323 being exploited?
There is no known exploitation of CVE-2021-3323 in the wild and no public exploit code.
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