Resource exhaustion in Asyncua Project
CVE-2022-25304
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.013 (70.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: +0.000
Affected products
- Asyncua Project
- Opcua Project
- Asyncua — versions 0
- Opcua — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security.snyk.io/vuln/SNYK-PYTHON-OPCUA-2988730 (Third Party Advisory)
- security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-2988731 (Third Party Advisory)
- github.com/FreeOpcUa/python-opcua/issues/1466 (Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2022-25304?
- CVE-2022-25304 is a high-severity vulnerability in Asyncua Project, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2022-08-23.
- How severe is CVE-2022-25304?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2022-25304 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.