USN-6334-1: atftp vulnerabilities

4 September 2023

Several security issues were fixed in atftp.

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

Releases

Packages

  • atftp - Advanced TFTP Server and Client

Details

Peter Wang discovered that atftp did not properly manage certain inputs. A
remote attacker could send a specially crafted tftp request to the server
to cause a crash. (CVE-2020-6097)

Andreas B. Mundt discovered that atftp did not properly manage certain
inputs. A remote attacker could send a specially crafted tftp request to
the server to cause a crash. (CVE-2021-41054)

Johannes Krupp discovered that atftp did not properly manage certain
inputs. A remote attacker could send a specially crafted tftp request to
the server and make the server to disclose /etc/group data.
(CVE-2021-46671)

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
Ubuntu 16.04

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