perl -- Directory Permissions Race Condition

Secunia reports:

Paul Szabo has reported a vulnerability in Perl File::Path::rmtree,
which potentially can be exploited by malicious, local users to
gain escalated privileges.
The vulnerability is caused due to a race condition in the way
File::Path::rmtree handles directory permissions when cleaning up
directories. This can be exploited by replacing an existing sub
directory in the directory tree with a symbolic link to an arbitrary
file.
Successful exploitation may allow changing permissions of arbitrary
files, if root uses an application using the vulnerable code to delete
files in a directory having a world-writable sub directory.