[USN-5156-1] ICU vulnerability

Rodrigo Figueiredo Zaiden rodrigo.zaiden at canonical.com
Wed Nov 24 18:01:38 UTC 2021

Ubuntu Security Notice USN-5156-1
November 24, 2021

A security issue was fixed in ICU

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

- Ubuntu 21.04
- Ubuntu 20.04 LTS


ICU could be made to crash if it received specially crafted

Software Description:
- icu: International Components for Unicode library


It was discovered that ICU contains a double free issue.
An attacker could use this issue to cause a denial of service or 
possibly execute arbitrary code.

Update instructions:

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

Ubuntu 21.04:
icu-devtools 67.1-6ubuntu2.1
libicu-dev 67.1-6ubuntu2.1
libicu67 67.1-6ubuntu2.1

Ubuntu 20.04 LTS:
icu-devtools 66.1-2ubuntu2.1
libicu-dev 66.1-2ubuntu2.1
libicu66 66.1-2ubuntu2.1

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


Package Information:

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