An issue was discovered in Arm Mbed TLS before 2.24.0. An attacker can recover a private key (for RSA or static Diffie-Hellman) via a side-channel attack against generation of base blinding/unblinding values.
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
Link | Tags |
---|---|
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-09-2 | vendor advisory |
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17 | third party advisory release notes |
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8 | third party advisory release notes |
https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0 | third party advisory release notes |
https://bugs.gentoo.org/740108 | issue tracking third party advisory patch |
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html | third party advisory mailing list |