From: Secunia Security Advisories (sec-advsecunia.com)
Date: Mon Apr 11 2005 - 08:51:15 CDT

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TITLE:
rsnapshot "copy_symlink()" Privilege Escalation Vulnerability

SECUNIA ADVISORY ID:
SA14878

VERIFY ADVISORY:
http://secunia.com/advisories/14878/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
rsnapshot 1.x
http://secunia.com/product/4901/

DESCRIPTION:
A vulnerability has been reported in rsnapshot, 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 an error in the "copy_symlink()"
function where file permissions for symlinks incorrectly is set on
the original file. This can be exploited in certain situations to
take ownership of arbitrary files by placing a malicious symlink in a
directory being backed up.

The vulnerability has been reported in version 1.2.0 and 1.1.6, and
prior.

SOLUTION:
Update to version 1.1.7 or 1.2.1.
http://www.rsnapshot.org/downloads.html

PROVIDED AND/OR DISCOVERED BY:
Reported by vendor.

ORIGINAL ADVISORY:
http://www.rsnapshot.org/security/2005/001.html

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