USN-3417-1: Libgcrypt vulnerability
Ubuntu Security Notice USN-3417-1
14th September, 2017
libgcrypt20 vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 17.04
Summary
Libgcrypt could be made to expose sensitive information.
Software description
- libgcrypt20
– LGPL Crypto library
Details
Daniel Genkin, Luke Valenta, and Yuval Yarom discovered that Libgcrypt was
susceptible to an attack via side channels. A local attacker could use this
attack to recover Curve25519 private keys.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 17.04:
-
libgcrypt20
1.7.6-1ubuntu0.2
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
Source: USN-3417-1: Libgcrypt vulnerability
