CVE-2020-8918
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Summary
An improperly initialized 'migrationAuth' value in Google's go-tpm TPM1.2 library versions prior to 0.3.0 can lead an eavesdropping attacker to discover the auth value for a key created with CreateWrapKey. An attacker listening in on the channel can collect both 'encUsageAuth' and 'encMigrationAuth', and then can calculate 'usageAuth ^ encMigrationAuth' as the 'migrationAuth' can be guessed for all keys created with CreateWrapKey. TPM2.0 is not impacted by this. We recommend updating your library to 0.3.0 or later, or, if you cannot update, to call CreateWrapKey with a random 20-byte value for 'migrationAuth'.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Google LLC | google/go-tpm library | stable < 0.3.0 | affected |
Weaknesses
- CWE-665: CWE-665 Improper Initialization
ADP Enrichment
CVE Program Container
Additional References
References
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