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AUSCERT External Security Bulletin Redistribution
ESB-2021.3998
USN-5156-1: ICU vulnerability
25 November 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: ICU
Publisher: Ubuntu
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2021-30535
Original Bulletin:
https://ubuntu.com/security/notices/USN-5156-1
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running ICU check for an updated version of the software for their
operating system.
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USN-5156-1: ICU vulnerability
24 November 2021
ICU could be made to crash if it received specially crafted
input.
Releases
o Ubuntu 21.04
o Ubuntu 20.04 LTS
Packages
o 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
o icu-devtools - 67.1-6ubuntu2.1
o libicu67 - 67.1-6ubuntu2.1
o libicu-dev - 67.1-6ubuntu2.1
Ubuntu 20.04
o icu-devtools - 66.1-2ubuntu2.1
o libicu66 - 66.1-2ubuntu2.1
o libicu-dev - 66.1-2ubuntu2.1
In general, a standard system update will make all the necessary changes.
References
o CVE-2021-30535
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