Caching of GATT characteristic values (TempID) in COVIDSafe v1.0.15 and v1.0.16 allows a remote attacker to long-term re-identify an Android device running COVIDSafe.
Weakness
The product does not properly “clean up” and remove temporary or supporting resources after they have been used.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Covidsafe | Health | * | 1.0.17 (excluding) |
Potential Mitigations
References
- https://covidsafe.watch/issue-register/cve-2020-12857-tempid-identifier-was-static
- https://docs.google.com/document/d/1u5a5ersKBH6eG362atALrzuXo3zuZ70qrGomWVEC27U/edit?usp=sharing
- https://www.health.gov.au/resources/apps-and-tools/covidsafe-app
- https://covidsafe.watch/issue-register/cve-2020-12857-tempid-identifier-was-static
- https://docs.google.com/document/d/1u5a5ersKBH6eG362atALrzuXo3zuZ70qrGomWVEC27U/edit?usp=sharing
- https://www.health.gov.au/resources/apps-and-tools/covidsafe-app