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AUSCERT External Security Bulletin Redistribution
ESB-2020.3007
USN-4482-1: Ark vulnerability
2 September 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: ark
Publisher: Ubuntu
Operating System: Ubuntu
Linux variants
Impact/Access: Create Arbitrary Files -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2020-24654
Original Bulletin:
https://usn.ubuntu.com/4482-1/
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running ark check for an updated version of the software for their
operating system.
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USN-4482-1: Ark vulnerability
01 September 2020
Ark could be made to write files as your login if it opened a specially
crafted file.
Releases
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Packages
o ark - archive utility
Details
Fabian Vogt discovered that Ark incorrectly handled symbolic links in
tar archive files. An attacker could use this to construct a malicious
tar archive that, when opened, would create files outside the extraction
directory.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 20.04
o ark - 4:19.12.3-0ubuntu1.2
Ubuntu 18.04
o ark - 4:17.12.3-0ubuntu1.2
Ubuntu 16.04
o ark - 4:15.12.3-0ubuntu1.2
In general, a standard system update will make all the necessary changes.
References
o CVE-2020-24654
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