Insufficient Nonce Validation in Eclipse Milo Client
### Impact Credential replay affecting those connected to a server when *all 3* of the following conditions are met: - `SecurityPolicy` is `None` - using username/password or X509-based authentication - the server has a defect causing it to send null/empty or zeroed nonces ### Patches The problem has been patched in version `0.3.6`. A more relaxed treatment of validation as agreed upon by the OPC UA Security Working Group is implemented in version `0.3.7`. ### Workarounds Do not use username/password or X509-based authentication with `SecurityPolicy` of `None`. ### References https://opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2019-19135.pdf ### For more information If you have any questions or comments about this advisory: * Open an issue at [https://github.com/eclipse/milo/issues](https://github.com/eclipse/milo/issues) * Email [the mailing list](mailto:milo-dev@eclipse.org)
beschreibt (1)
Zugehörige CVEs.
| ID | Schweregrad | ausnutzbar | ||
|---|---|---|---|---|
| CVE-2019-19135US | high7.4OT erhöht | — | ||
In OPC Foundation OPC UA .NET Standard codebase 1.4.357.28, servers do not create sufficiently random numbers in OPCFoundation.NetStandard.Opc.Ua before 1.4.359.31, which allows ma… | ||||
Referenzen
Externe Belege — Patches, Meldungen, Analysen.
- https://github.com/eclipse/milo/commit/cac0e710bf2b8bed9c602fc597e9de1d8903abedWEB
- https://github.com/eclipse/milo/security/advisories/GHSA-pq4w-qm9g-qx68WEB
- https://nvd.nist.gov/vuln/detail/CVE-2019-19135ADVISORY
- https://opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2019-19135.pdfWEB
- https://opcfoundation.org/security-bulletinsWEB
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