Ubuntu Security Notice 5156-1 - 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.
d560bea347aae6207b3cb00f80b1f65bef5581542bb6f93f5b0ea7a454424f0b
==========================================================================
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
Summary:
ICU could be made to crash if it received specially crafted
input.
Software Description:
- icu: International Components for Unicode library
Details:
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.
References:
https://ubuntu.com/security/notices/USN-5156-1
CVE-2021-30535
Package Information:
https://launchpad.net/ubuntu/+source/icu/67.1-6ubuntu2.1
https://launchpad.net/ubuntu/+source/icu/66.1-2ubuntu2.1