15420 : rsnapshot copy_symlink() Arbitrary File Ownership Modification
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Info

Last Modified
about 1 year ago

Percent Complete
90%

Disclosure
Apr 09, 2005

Discovery
Unknown

Dates

Exploit
Unknown

Solution
Unknown

Keywords

 No Keywords

Description

 Rsnapshot contains a flaw that may allow a malicious user to gain access to unauthorized privileges. The issue is due to an error in the "copy_symlink()" function where file permissions for symlinks are incorrectly set on the original file. This flaw may allow an attacker to take ownership of arbitrary files by placing a malicious symlink in a directory being backed up, resulting in a loss of integrity.

Classification

 Location: Local Access Required
Attack Type: Race Condition
Impact: Loss of Integrity
Exploit: Exploit Unavailable
Disclosure: OSVDB Verified

Solution

 Upgrade to version 1.2.1 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products
Nathan Rosenquist
Watch-list
rsnapshot
Watch-list
 1.2.0
1.1.6

References

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Nessus

 19023

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