CVE-2022-25304

Denial of Service (DoS)

Description

All versions of package opcua; all versions of package asyncua are vulnerable to Denial of Service (DoS) due to a missing limitation on the number of received chunks - per single session or in total for all concurrent sessions. An attacker can exploit this vulnerability by sending an unlimited number of huge chunks (e.g. 2GB each) without sending the Final closing chunk.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.08%
Third-Party Advisory github.com Third-Party Advisory snyk.io Third-Party Advisory snyk.io
Affected: n/a opcua
Affected: n/a asyncua
Published at:
Updated at:

References

Link Tags
https://security.snyk.io/vuln/SNYK-PYTHON-OPCUA-2988730 third party advisory
https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-2988731 third party advisory
https://github.com/FreeOpcUa/python-opcua/issues/1466 third party advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2022-25304?
CVE-2022-25304 has been scored as a high severity vulnerability.
How to fix CVE-2022-25304?
To fix CVE-2022-25304, 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-2022-25304 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-25304 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-2022-25304?
CVE-2022-25304 affects n/a opcua, n/a asyncua.
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