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Archive_Zipr.txt

Archive_Zipr.txt
Posted Feb 26, 2006
Authored by Hamid Ebadi | Site hamid.ir

Archive_Zipr is susceptible to a directory traversal attack when fed a malicious ZIP file. Version 1.1 has been found vulnerable.

tags | advisory
SHA-256 | 280500752b6fde37f790414e1ab015b3a73d55ec4a39e136d19dc4b299d57e9a

Archive_Zipr.txt

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Archive_Zipr   (Zip file management class)  Directory
traversal

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 zip.lib.php v 1.1

Detail :
Directory traversal while extracting (.ZIP)

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

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