PT-2026-55973 · Nxp+1 · Caam+1
CVSS v3.1
3.3
Low
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Name of the Vulnerable Software and Affected Versions
OP-TEE versions 3.9.0 through 4.10.x
Description
The RSA-OAEP decryption implementation in the NXP CAAM crypto driver uses a non-constant-time
memcmp() function for label hash verification and contains multiple distinguishable error paths. This creates a Manger-style padding oracle, which is a side-channel attack that allows an attacker to recover RSA-OAEP plaintext by sending approximately 1000-2000 adaptive chosen ciphertext queries.Recommendations
Update to version 4.11.0.
Disable the NXP CAAM RSA driver by setting
CFG CRYPTO DRV RSA=n.Fix
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Weakness Enumeration
Related Identifiers
Affected Products
Caam
Op-Tee