Claws Mail: Insecure temporary file creation

Background

Claws Mail is a GTK based e-mail client.

Description

Nico Golde from Debian reported that the sylprint.pl script that is part of the Claws Mail tools creates temporary files in an insecure manner.

Impact

A local attacker could exploit this vulnerability to conduct symlink attacks to overwrite files with the privileges of the user running Claws Mail.

Workaround

There is no known workaround at this time.

Resolution

All Claws Mail users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=mail-client/claws-mail-3.0.2-r1"