Auth bypass in Freeopcua Opcua-Asyncio
CVE-2023-26150
Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication. **Note:** This issue is a result of missing checks for services that require an active session.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (37.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Freeopcua Opcua-Asyncio
- Asyncua — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-5673435 (Exploit, Patch, Third Party Advisory)
- gist.github.com/artfire52/84f7279a4119d6f90381ac49d7121121 (Exploit, Third Party Advisory)
- github.com/FreeOpcUa/opcua-asyncio/issues/1014 (Exploit, Third Party Advisory, Issue Tracking)
- github.com/FreeOpcUa/opcua-asyncio/pull/1015 (Patch)
- github.com/FreeOpcUa/opcua-asyncio/commit/2be7ce80df05de8d6c6ae1ebce6fa2bb71478… (Patch)
- github.com/FreeOpcUa/opcua-asyncio/releases/tag/v0.9.96 (Product, Release Notes)
- github.com/FreeOpcUa/opcua-asyncio/commit/b4106dfd5037423c9d1810b48a97296b59cde… (Patch)
Frequently asked questions
- What is CVE-2023-26150?
- CVE-2023-26150 is a medium-severity vulnerability in Freeopcua Opcua-Asyncio, classified under Improper Authentication. CVSS score: 6.5/10. Published 2023-10-03.
- How severe is CVE-2023-26150?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2023-26150 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.