QID 671105

Libgcrypt is a general purpose crypto library based on the code used in gnu privacy guard.
This is a development version.
Security fix(es): libgcrypt before 1.5.4, as used in gnupg and other products, does not properly perform ciphertext normalization and ciphertext randomization, which makes it easier for physically proximate attackers to conduct key-extraction attacks by leveraging the ability to collect voltage data from exposed metal, a different vector than cve-2013-4576.(cve-2014-5270) libgcrypt before version 1.7.8 is vulnerable to a cache side-channel attack resulting into a complete break of rsa-1024 while using the left-to-right method for computing the sliding-window expansion.
The same attack is believed to work on rsa-2048 with moderately more computation.
This side-channel requires that attacker can run arbitrary software on the hardware where the private rsa key is used.(cve-2017-7526)

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

An arbitrary attacker may exploit this vulnerability to compromise the system.