Ubuntu Security Update USN-4236-1: Libgcrypt vulnerability

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libgcrypt20 vulnerability


A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 19.10
  • Ubuntu 19.04
  • Ubuntu 18.04 LTS
Summary


Libgcrypt could be made to expose sensitive information.

Software Description

  • libgcrypt20 - LGPL Crypto library
Details


It was discovered that Libgcrypt was susceptible to a ECDSA timing attack. An attacker could possibly use this attack to recover sensitive information.

Update instructions


The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.10
libgcrypt20 - 1.8.4-5ubuntu2.1
Ubuntu 19.04
libgcrypt20 - 1.8.4-3ubuntu1.1
Ubuntu 18.04 LTS
libgcrypt20 - 1.8.1-4ubuntu1.2

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


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