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Category:   Application (Generic)  >   GNU Compiler Collection (GCC) Vendors:   GNU [multiple authors]
GCC FastJar Directory Traversal Lets Users Cause Files to Be Overwritten
SecurityTracker Alert ID:  1017987
SecurityTracker URL:  http://securitytracker.com/id/1017987
CVE Reference:   CVE-2006-3619   (Links to External Site)
Date:  May 1 2007
Impact:   Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 3.4.6 and prior versions; 4.1.1 and prior versions
Description:   A vulnerability was reported in GNU C++ Compiler (GCC). A remote user can cause files to be overwriten on the target system.

The extract_jar() function in 'jartool.c' does not properly validate user-supplied input. A remote user can create a jar archive with specially crafted filenames that contain '../' directory traversal characters that, when unpacked by the target user via gcc, will overwrite files with the privileges of the target user.

This vulnerability was reported in July 2006.

marcus at jet.franken.de reported this vulnerability.

Impact:   A user can cause files to be overwritten on the target system.
Solution:   A fix is available via CVS (Revision 115946).

The vendor's advisory is available at:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28359

Vendor URL:  gnu.org/ (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
May 1 2007 (Red Hat Issues Fix) GCC FastJar Directory Traversal Lets Users Cause Files to Be Overwritten
Red Hat has released a fix for Red Hat Enterprise Linux 4.
Jun 11 2007 (Red Hat Issues Fix) GCC FastJar Directory Traversal Lets Users Cause Files to Be Overwritten
Red Hat has released a fix for Red Hat Enterprise Linux 3.



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