- Fix a side channel vulnerability in modular exponentiation that could
reveal an RSA private key used in a secure enclave.
- Fix side channel in mbedtls_ecp_check_pub_priv() and
mbedtls_pk_parse_key() / mbedtls_pk_parse_keyfile() (when loading a
private key that didn't include the uncompressed public key), as well
as mbedtls_ecp_mul() / mbedtls_ecp_mul_restartable() when called with
a NULL f_rng argument. An attacker with access to precise enough
timing and memory access information (typically an untrusted operating
system attacking a secure enclave) could fully recover the ECC private
key.
- Fix issue in Lucky 13 counter-measure that could make it ineffective
when hardware accelerators were used (using one of the
MBEDTLS_SHAxxx_ALT macros). This would cause the original Lucky 13
attack to be possible in those configurations, allowing an active
network attacker to recover plaintext after repeated timing
measurements under some conditions.
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-07
Switch to github to get latest release
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
7f79bb5cfd