=========================================================================Ubuntu Security Notice USN-4305-1
March 17, 2020

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

- Ubuntu 19.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM

Summary:

ICU could be made to execute arbitrary code if it received a specially crafted
string.

Software Description:
- icu: International Components for Unicode library

Details:

André Bargull discovered that ICU incorrectly handled certain strings.
An attacker could possibly use this issue to execute arbitrary code.

Update instructions:

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

Ubuntu 19.10:
  libicu63                        63.2-2ubuntu0.1

Ubuntu 18.04 LTS:
  libicu60                        60.2-3ubuntu3.1

Ubuntu 16.04 LTS:
  libicu55                        55.1-7ubuntu0.5

Ubuntu 14.04 ESM:
  libicu52                        52.1-3ubuntu0.8+esm1

Ubuntu 12.04 ESM:
  libicu48                        4.8.1.1-3ubuntu0.10

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

References:
  https://ubuntu.com/security/notices/USN-4305-1
  CVE-2020-10531

Package Information:
  https://launchpad.net/ubuntu/+source/icu/63.2-2ubuntu0.1
  https://launchpad.net/ubuntu/+source/icu/60.2-3ubuntu3.1
  https://launchpad.net/ubuntu/+source/icu/55.1-7ubuntu0.5