[SA13643] Perl "File::Path::rmtree" Race Condition

TITLE:
Perl "File::Path::rmtree" Race Condition

SECUNIA ADVISORY ID:
SA13643

VERIFY ADVISORY:
http://secunia.com/advisories/13643/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
Perl 5.x
http://secunia.com/product/2647/

DESCRIPTION:
Paul Szabo has reported a vulnerability in Perl "File::Path::rmtree",
allowing malicious, local users to gain escalated privileges.

The vulnerability is caused due to a race condition in the way
"File::Path::rmtree" changes permissions on files before deleting
them. This can be exploited by creating a symbolic link to arbitrary
files.

Successful exploitation may allow changing permissions or removing
arbitrary files, if root uses an application using the vulnerable
code to delete files.

SOLUTION:
Do not use applications, which use "File::Path::rmtree", on systems
with untrusted users.

PROVIDED AND/OR DISCOVERED BY:
Paul Szabo

About:
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vulnerabilities.

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