CVE-2022-43501

Description

KASAGO TCP/IP stack provided by Zuken Elmic generates ISNs(Initial Sequence Number) for TCP connections from an insufficiently random source. An attacker may be able to determine the ISN of the current or future TCP connections and either hijack existing ones or spoof future ones.

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.21%
Vendor Advisory co.jp
Affected: ZUKEN Elmic Kasago IPv6/v4 Dual
Affected: ZUKEN Elmic Kasago IPv4
Affected: ZUKEN Elmic Kasago IPv4 Light
Affected: ZUKEN Elmic Kasago mobile IPv6
Published at:
Updated at:

References

Link Tags
https://www.elwsc.co.jp/news/6352 vendor advisory
https://jvn.jp/en/vu/JVNVU99551468/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2022-43501?
CVE-2022-43501 has been scored as a critical severity vulnerability.
How to fix CVE-2022-43501?
To fix CVE-2022-43501, 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-2022-43501 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-43501 is being actively exploited. 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-2022-43501?
CVE-2022-43501 affects ZUKEN Elmic Kasago IPv6/v4 Dual, ZUKEN Elmic Kasago IPv4, ZUKEN Elmic Kasago IPv4 Light, ZUKEN Elmic Kasago mobile IPv6.
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