Berk Sunar

An issue was discovered in wolfSSL that leads to ECDSA key disclosure via a safe-error attack using Rowhammer, known as FAULT+PROBE. When `WOLFSSL CHECK SIG FAULTS` is used in signing operations with private ECC keys, such as in server-side TLS connections, the connection is halted if any fault occurs. The success rate in a certain amount of connection requests can be processed via an advanced technique for ECDSA key recovery.

An issue was discovered in wolfSSL that allows a fault injection attack on RAM via Rowhammer, leading to ECDSA key disclosure. Users performing signing operations with private ECC keys, such as in server-side TLS connections, might leak faulty ECC signatures. These signatures can be processed via an advanced technique for ECDSA key recovery.

The issue is related to a side-channel timing attack that allows attackers to extract the ECDSA private key due to mishandled ECDSA scalar multiplication. This vulnerability is associated with defects in the cryptographic algorithms used in the TPM processor's firmware. An attacker can exploit this issue to recover the value of closed keys stored in the Trusted Platform Module.

The issue is related to cryptographic timing conditions in the Intel(R) PTT, Intel(R) TXE, and Intel(R) SPS subsystems, which may allow an unauthenticated user to potentially enable information disclosure via network access. This vulnerability is associated with a lack of protection for service data and may allow a remote attacker to access cryptographic keys stored in the Trusted Platform Module (TPM).