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GHSA-mfpj-3qhm-976m

Uncontrolled Resource Consumption in asyncua and opcua

Source: GitHub Advisory Database (reviewed) High CVE-2022-25304

Packages

EcosystemPackageAffectedFixed in
PyPI asyncua < 0.9.96 0.9.96
PyPI opcua <= 0.98.13 no fix listed

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.