** Also affects: nautilus via
https://bugzilla.gnome.org/show_bug.cgi?id=549882
Importance: Unknown
Status: Unknown
** Changed in: nautilus (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1236983
Title:
Possible security expoit using special characters to manipulate
displayed filename.
Status in Nautilus:
Unknown
Status in “nautilus” package in Ubuntu:
Confirmed
Bug description:
Use of special characters can be used to manipulate a filename
extension in Nautilus. We received a piece of malware with a filename
that appears differently with Nautilus than on the command line using
ls.
With Nautilus we see: NO.00123Order# POrcs.pdf
With ls in bash we see: NO.00123Order# POfdp.scr
Using od the special characters are revealed as:
ronp@ron:~/Desktop/virus$ ls *scr | od -c
0000000 N O . 0 0 1 2 3 O r d e r # P
0000020 O 342 200 256 f d p . s c r \n
0000034
Before extraction from the archive, the file appears with question marks as
follows:
NO.00123Order# PO???fdp.scr
Perhaps this would be a more secure way to display the file in
Nautaulis revealing the true nature of the file; scr instead of pdf.
This occurred with Nautilus 3.4.2 on Ubuntu 12.10 and Nautilus 3.6.3
on Ubuntu 13.04
We note this type of exploit has been used before:
https://kc.mcafee.com/resources/sites/MCAFEE/content/live/PRODUCT_DOCUMENTATION/23000/PD23930/en_US/McAfee_Labs_Threat_Advisory_XDocCrypt.pdf
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