CVE-2022-25304 — HIGH (7.5)

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Asyncua Project	Asyncua	All versions
Opcua Project	Opcua	All versions

Related Weaknesses (CWE)

CWE-770

References

https://github.com/FreeOpcUa/python-opcua/issues/1466Issue TrackingThird Party Advisory
https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-2988731Third Party Advisory
https://security.snyk.io/vuln/SNYK-PYTHON-OPCUA-2988730Third Party Advisory
https://github.com/FreeOpcUa/python-opcua/issues/1466Issue TrackingThird Party Advisory
https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-2988731Third Party Advisory
https://security.snyk.io/vuln/SNYK-PYTHON-OPCUA-2988730Third Party Advisory

FAQ

What is CVE-2022-25304?

CVE-2022-25304 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 f...

How severe is CVE-2022-25304?

CVE-2022-25304 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2022-25304?

Check the references section above for vendor advisories and patch information. Affected products include: Asyncua Project Asyncua, Opcua Project Opcua.