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EUVD-2022-6584 · Published Aug 24, 2022
Uncontrolled Resource Consumption in asyncua and opcua 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.
Technologies
Asyncua_Project AsyncuaOpcua_Project OpcuaOpcua OpcuaAsyncua Asyncua
Weaknesses
CWE-770CWE-400
CVSS scores
- v3.17.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
MITRE ATT&CK
InferredWhere this vulnerability fits in an attack
Initial Access Impact
References
- https://github.com/FreeOpcUa/python-opcua/issues/1466
- https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-2988731
- https://security.snyk.io/vuln/SNYK-PYTHON-OPCUA-2988730
- https://nvd.nist.gov/vuln/detail/CVE-2022-25304
- https://github.com/FreeOpcUa/opcua-asyncio/commit/01c7acf047887b62d979cd4373d370e72a4b9057
- https://github.com/FreeOpcUa/opcua-asyncio
Potentially impacted assets
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