| Package | Affected versions | Patched versions |
|---|---|---|
| mbed crypto | < 3.0.0 | 3.0.0 |
| mbed tls | ≥ 2.17.0, < 2.20.0≥ 2.8.0, < 2.16.4< 2.7.13 | 2.20.02.16.42.7.13 |
The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recover the private key via side-channel attacks.
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