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Ubuntu Security Notice USN-4236-2

Ubuntu Security Notice USN-4236-2
Posted Jan 14, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4236-2 - USN-4236-1 fixed a vulnerability in Libgcrypt. This update provides the corresponding fix for Ubuntu 16.04 LTS. It was discovered that Libgcrypt was susceptible to a ECDSA timing attack. An attacker could possibly use this attack to recover sensitive information. Various other issues were also addressed.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2019-13627
MD5 | 05b2cded165fec1375159f7f0dce01e1

Ubuntu Security Notice USN-4236-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4236-2
January 14, 2020

libgcrypt20 vulnerability
==========================================================================

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

- Ubuntu 16.04 LTS

Summary:

Libgcrypt could be made to expose sensitive information.

Software Description:
- libgcrypt20: LGPL Crypto library

Details:

USN-4236-1 fixed a vulnerability in Libgcrypt. This update provides the
corresponding fix for Ubuntu 16.04 LTS.

Original advisory 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 16.04 LTS:
libgcrypt20 1.6.5-2ubuntu0.6

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/4236-2
https://usn.ubuntu.com/4236-1
CVE-2019-13627

Package Information:
https://launchpad.net/ubuntu/+source/libgcrypt20/1.6.5-2ubuntu0.6
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