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LIN7-8293 : Security Advisory - libgcrypt - CVE-2017-9526

Created: Jun 14, 2017    Updated: Sep 8, 2018
Resolved Date: Jul 3, 2017
Found In Version: 7.0.0.25
Fix Version: 7.0.0.26
Severity: Standard
Applicable for: Wind River Linux 7
Component/s: Userspace

Description

In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library.

https://nvd.nist.gov/vuln/detail/CVE-2017-9526

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