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Alerts This Week
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Ubuntu 4236-3: Libgcrypt Critical Timing Attack Discloses Info

ubuntu
Calendar Grey January 28, 2020
Dist Ubuntu Esm H88
Ubuntu Security Advisory USN-4236-4 pertains to a vulnerability found in Libgcrypt that could lead to exposure of confidential data. It is advised to proceed with updates.
Libgcrypt could be made to expose sensitive information.

Summary

Libgcrypt could be made to expose sensitive information.

Software Description:

- libgcrypt11: LGPL Crypto library

Details:

USN-4236-1 fixed a vulnerability in Libgcrypt. This update provides

the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

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 timing attack ubuntu sensitive information libgcrypt

Update Instructions

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

Ubuntu 14.04 ESM:
  libgcrypt11                     1.5.3-2ubuntu4.6+esm1

Ubuntu 12.04 ESM:
  libgcrypt11                     1.5.0-3ubuntu0.9

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

References

https://ubuntu.com/security/notices/USN-4236-3

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

CVE-2019-13627

Severity
critical
Lowest
Low
Medium
High
Critical

January 28, 2020

Topics%20covered

Topics Covered

security advisory timing attack ubuntu sensitive information libgcrypt

Package Information

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