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Secunia Network Software Inspector 2.0 (NSI) - Public Beta

The Public Beta has ended. Thanks to all that participated.

Learn more:
http://secunia.com/network_software_inspector_2/

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TITLE:
Blender Multiple Temporary File Security Issues

SECUNIA ADVISORY ID:
SA29842

VERIFY ADVISORY:
http://secunia.com/advisories/29842/

CRITICAL:
Not critical

IMPACT:
Exposure of sensitive information, Privilege escalation

WHERE:
Local system

SOFTWARE:
Blender 2.x
http://secunia.com/product/5780/

DESCRIPTION:
Some security issues have been discovered in Blender, which can be
exploited by malicious, local users to disclose potentially sensitive
information and perform certain actions with escalated privileges.

The security issues are caused due to Blender handling temporary
files in an insecure manner (e.g. creating "/tmp/quit.blend" when
quitting Blender, using easy to guess file names and insecure file
permissions to store temporary render frames, and insecure file
permission when auto saving files). This can be exploited to e.g.
conduct symlink attacks and overwrite arbitrary files with the
permissions of the user running Blender or disclose potentially
sensitive information.

The security issues are confirmed in version 2.45 on a Linux system.
Other versions may also be affected.

SOLUTION:
Restrict access to trusted users.

PROVIDED AND/OR DISCOVERED BY:
Independently discovered by various persons.

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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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http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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