USN-4236-1: Libgcrypt vulnerability

USN-4236-1: Libgcrypt vulnerability

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

• CVE-2019-13627

Source: USN-4236-1: Libgcrypt vulnerability