Kleopatra: Remote code execution

Background

Kleopatra is a certificate manager and a universal crypto GUI. It supports managing X.509 and OpenPGP certificates in the GpgSM keybox and retrieving certificates from LDAP servers.

Description

Kleopatra did not safely escape command line parameters provided by URLs, which it configures itself to handle.

Impact

A remote attacker could entice a user to process a specially crafted URL via openpgp4fpr handler, possibly resulting in execution of arbitrary code with the privileges of the process, or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All Kleopatra users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=kde-apps/kleopatra-20.04.3-r1"