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Ubuntu 17.04: USN-3421-1 Critical: Libidn2 Denial Of Service

ubuntu
Calendar Grey September 18, 2017
Dist Ubuntu Esm H88
Ionic3 may experience a failure caused by maliciously designed data on Ubuntu 17.04, prompting an immediate patch release.
Libidn2 could be made to crash if it received specially crafted input.

Summary

Libidn2 could be made to crash if it received specially crafted

input.

Software Description:

- libidn2-0: Internationalized domain names (IDNA2008) library

Details:

It was discovered that Libidn2 incorrectly handled certain input. A

remote attacker could possibly use this issue to cause Libidn2 to

crash, resulting in a denial of service.

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu libidn2

Update Instructions

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

Ubuntu 17.04:
  idn2                            0.16-1ubuntu0.1
  libidn2-0                       0.16-1ubuntu0.1

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

References

  https://ubuntu.com/security/notices/USN-3421-1

  CVE-2017-14062

Severity
critical
Lowest
Low
Medium
High
Critical

September 18, 2017

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu libidn2

Package Information

  https://launchpad.net/ubuntu/+source/libidn2-0/0.16-1ubuntu0.1

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