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TITLE:
Skype "skype_profile.jpg" Insecure Temporary File Creation

SECUNIA ADVISORY ID:
SA16105

VERIFY ADVISORY:
http://secunia.com/advisories/16105/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
Skype for Linux 0.x
http://secunia.com/product/4251/
Skype for Linux 1.x
http://secunia.com/product/5402/

DESCRIPTION:
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 1.1.0.20. 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:
http://www.zone-h.org/advisories/read/id=7808

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


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