Giovanni Delvecchio has discovered a vulnerability in Skype for Linux, which can be exploited by malicious, local users to perform certain actions on a vulnerable system with escalated privileges.
The vulnerability is caused due to the temporary file "/tmp/skype_profile.jpg" being created insecurely. This can be exploited via symlink attacks to create or overwrite arbitrary files with the privileges of the user running the affected application.
The vulnerability has been confirmed in version 188.8.131.52. Prior versions may also be affected.
Solution: Grant only trusted users access to affected systems.
Provided and/or discovered by: Giovanni Delvecchio, Zone-H Security Team.
Original Advisory: Zone-H.org:
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