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Ubuntu Security Notice USN-4236-1

Ubuntu Security Notice USN-4236-1
Posted Jan 13, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4236-1 - It was discovered that Libgcrypt was susceptible to a ECDSA timing attack. An attacker could possibly use this attack to recover sensitive information.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2019-13627
MD5 | 7b6be66250d233504f1e911ac51bd610

Ubuntu Security Notice USN-4236-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4236-1
January 13, 2020

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

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

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

Package Information:
https://launchpad.net/ubuntu/+source/libgcrypt20/1.8.4-5ubuntu2.1
https://launchpad.net/ubuntu/+source/libgcrypt20/1.8.4-3ubuntu1.1
https://launchpad.net/ubuntu/+source/libgcrypt20/1.8.1-4ubuntu1.2

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