Description
Versions of the package asyncua before 0.9.96 are vulnerable to Denial of Service (DoS) such that an attacker can send a malformed packet and as a result, the server will enter into an infinite loop and consume excessive memory.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | asyncua | < 0.9.96 | 0.9.96 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | python-opcua | No fix yet | — |
| Ubuntu 20.04 LTS | python-opcua | No fix yet | — |
| Ubuntu 18.04 LTS | python-opcua | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | asyncua | < 0.9.96 | 0.9.96 | GHSA-gfvq-mxw3-mfq3 |
References
- https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-5673709
- https://gist.github.com/artfire52/1540b234350795e0ecb4d672608dbec8
- https://github.com/FreeOpcUa/opcua-asyncio/issues/1013
- https://github.com/FreeOpcUa/opcua-asyncio/pull/1039
- https://github.com/FreeOpcUa/opcua-asyncio/commit/f6603daa34a93a658f0e176cb0b9ee5a6643b262
- https://github.com/FreeOpcUa/opcua-asyncio/releases/tag/v0.9.96