A vulnerability was found in KylinSoft kylin-software-properties on KylinOS. It has been rated as critical. This issue affects the function setMainSource. The manipulation leads to os command injection. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. Upgrading to version 0.0.1-130 is able to address this issue. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-230687. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was found in KylinSoft kylin-software-properties on KylinOS. It has been declared as critical. This vulnerability affects the function changedSource. The manipulation leads to improper access controls. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. Upgrading to version 0.0.1-130 is able to address this issue. It is recommended to upgrade the affected component. VDB-230686 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

ppa.py in Software Properties before 0.81.13.3 does not validate the server certificate when downloading PPA GPG key fingerprints, which allows man-in-the-middle (MITM) attackers to spoof GPG keys for a package repository.

dbus/SoftwarePropertiesDBus.py in Software Properties 0.92.17 before 0.92.17.3, 0.92.9 before 0.92.9.3, and 0.82.7 before 0.82.7.5 does not properly use D-Bus for communication with a polkit authority, which allows local users to bypass intended access restrictions by leveraging a PolkitUnixProcess PolkitSubject race condition via a (1) setuid process or (2) pkexec process, a related issue to CVE-2013-4288.

The apt-add-repository tool in Ubuntu Software Properties 0.75.x before 0.75.10.3, 0.80.x before 0.80.9.2, 0.81.x before 0.81.13.5, 0.82.x before 0.82.7.3, and 0.92.x before 0.92.8 does not properly check PPA GPG keys imported from a keyserver, which allows remote attackers to install arbitrary package repository GPG keys via a man-in-the-middle (MITM) attack.

software-properties was vulnerable to a person-in-the-middle attack due to incorrect TLS certificate validation in softwareproperties/ppa.py. software-properties didn't check TLS certificates under python2 and only checked certificates under python3 if a valid certificate bundle was provided. Fixed in software-properties version 0.92.