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Category:   Application (Generic)  >   Python Vendors:   Python.org
Python repr() Processing of UTF-32/UCS-4 Strings May Let Remote Users Deny Service or Execute Arbitrary Code
SecurityTracker Alert ID:  1017019
SecurityTracker URL:  http://securitytracker.com/id/1017019
CVE Reference:   CVE-2006-4980   (Links to External Site)
Updated:  Oct 14 2006
Original Entry Date:  Oct 9 2006
Impact:   Denial of service via network, Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.2, 2.3, 2.4 prior to 2.4.4
Description:   A vulnerability was reported in Python. A remote user can cause denial of service conditions or potentially execute arbitrary code.

The Python repr() function does not properly process UTF-32/UCS-4 strings. A remote user may be able to send specially crafted data to a Python-based application that uses the repr() function on the user-supplied data to cause the application to crash or potentially execute arbitrary code.

Benjamin C. Wiley Sittler reported this vulnerability.

The original bug report is available at:

http://sourceforge.net/tracker/index.php?func=detail&aid=1541585&group_id=5470&atid=305470

Impact:   A remote user can cause denial of service conditions or potentially execute arbitrary code.
Solution:   The vendor has issued the following patches:

http://python.org/files/news/security/PSF-2006-001/patch-2.3.txt (Python 2.2, 2.3)
http://python.org/files/news/security/PSF-2006-001/patch-2.4.txt (Python 2.4)

The vendor plans to issue a fixed version (2.4.4).

Python version 2.5 already contains the fix.

The Python advisory is available at:

http://www.python.org/news/security/PSF-2006-001/

Vendor URL:  www.python.org/news/security/PSF-2006-001/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Oct 9 2006 (Red Hat Issues Fix) Python repr() Processing of UTF-32/UCS-4 Strings May Let Remote Users Deny Service or Execute Arbitrary Code
Red Hat has released a fix for Red Hat Enterprise Linux 3 and 4.
May 20 2008 (Red Hat Issues Fix for Red Hat Network Satellite Server) Python repr() Processing of UTF-32/UCS-4 Strings May Let Remote Users Deny Service or Execute Arbitrary Code
Red Hat has released a fix for Red Hat Network Satellite Server 5.x.
Jun 30 2008 (Red Hat Issues Fix for Red Hat Network Satellite Server) Python repr() Processing of UTF-32/UCS-4 Strings May Let Remote Users Deny Service or Execute Arbitrary Code
Red Hat has released a fix for Red Hat Network Satellite Server Solaris client.



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