Function check_attachment_for_errors() in file data/general-hooks/ubuntu.py could be tricked into exposing private data via a constructed crash file. This issue affects: apport 2.14.1 versions prior to 2.14.1-0ubuntu3.29+esm8; 2.20.1 versions prior to 2.20.1-0ubuntu2.30+esm2; 2.20.9 versions prior to 2.20.9-0ubuntu7.26; 2.20.11 versions prior to 2.20.11-0ubuntu27.20; 2.20.11 versions prior to 2.20.11-0ubuntu65.3;
https://ubuntu.com/security/notices/USN-5077-2
https://ubuntu.com/security/notices/USN-5077-1
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3709
https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1934308