Hi TF-A LTS maintainers,
FYI Mbed TLS project released a minor version with 2 security fixes. See
the release notes here:
https://github.com/Mbed-TLS/mbedtls/releases/tag/v2.28.7
I believe TF-A is not affected by any of these 2 security issues. To the
best of my knowledge:
* Private key RSA operations are only used for asymmetric-key
decryption. In most cases, TF-A does not decrypt anything, it only
verifies boot signatures, which rather involves RSA *public* key operations.
There is the case of the firmware decryption feature (see `ENCRYPT_FW`
build option and associated code & doc) but this uses AES-GCM, not RSA.
* TF-A does not modify boot certificates (so no X.509 extensions
modifications), it only consumes them.
Best regards,
Sandrine
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