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Ubuntu 16.04 LTS: USN-4236-2 Critical Libgcrypt Timing Attack

ubuntu
Calendar Grey January 14, 2020
Dist Ubuntu Esm H88
Boost your system's protection by upgrading libgcrypt on Ubuntu 16.04 LTS to guard against the risk of sensitive data leaks.
Libgcrypt could be made to expose sensitive information.

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.

Topics%20covered

Topics Covered

security advisory Ubuntu timing attack information libgcrypt expose

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://ubuntu.com/security/notices/USN-4236-2

https://ubuntu.com/security/notices/USN-4236-1

CVE-2019-13627

Severity
critical
Lowest
Low
Medium
High
Critical

January 14, 2020

Topics%20covered

Topics Covered

security advisory Ubuntu timing attack information libgcrypt expose

Package Information

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

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