Bug #6933

Archive_Tar (Tar file management class) Directory traversal

Details

Submitted	2006-02-25 04:07 UTC
From	het_ebadi at yahoo dot com
Assigned	cellog
Status	Closed
Package	Archive_Tar
PHP Version	Irrelevant
OS	ALL
Roadmaps	(Not assigned)

Comments

[2006-02-25 04:07 UTC] het_ebadi at yahoo dot com

Description:
------------
Archive_Tar (Tar file management class) Directory traversal (Tested on 1.2)

This class provides handling of tar files in PHP.
It supports creating, listing, extracting and adding to tar files.
Gzip support is available if PHP has the zlib extension built-in or
loaded. Bz2 compression is also supported with the bz2 extension loaded.
http://www.phpconcept.net
http://www.zend.com/pear/whoiswho.php?pkg=Archive_Tar
http://pear.php.net/package/Archive_Tar

Credit:
The information has been provided by Hamid Ebadi
( Hamid Network Security Team) : admin@hamid.ir.
The original article can be found at : http://hamid.ir/security

Vulnerable Systems:
Tested on Archive_Tar 1.2

Detail :
Directory traversal while extracting (.TAR)

What is Directory traversal in archivers?

that allowed one to create malicous archive files, which would overwrite system files or place dangerous files in defined directory(example :shell.php in wwwroot directory)
This could be abused by sending an archive to a local user who would unzip / untar an archive, the archive would then be able to overwrite any file to which the user has write permissions, thus it could also be abused if a system ran som antivirus software which automatically opened archive files.

harmless exploit:
use HEAP [Hamid Evil Archive Pack]
you can find it from Hamid Network Security Team:

http://www.hamid.ir/tools/

want to know more ?
http://www.hamid.ir/paper