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USN-4461-1: Ark vulnerability

18 August 2020

Ark could be made to write files as your login if it opened a specially crafted file.

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Releases

Packages

  • ark - archive utility

Details

Dominik Penner discovered that Ark did not properly sanitize zip archive
files before performing extraction. An attacker could use this to construct
a malicious zip archive that, when opened, would create files outside the
extraction directory.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 20.04
Ubuntu 18.04

After a standard system update you need to restart Ark to make all
the necessary changes.

References