Secunia Security Advisory - 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.
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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:
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