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Category:   Application (Generic)  >   Python Vendors:   Python.org
(Oracle Issues Fix for Solaris) Python Hash Table Collision Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1028423
SecurityTracker URL:  http://securitytracker.com/id/1028423
CVE Reference:   CVE-2012-1150   (Links to External Site)
Date:  Apr 11 2013
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 2.6.8, 2.7.x prior to 2.7.3, 3.x prior to 3.1.5, and 3.2.x prior to 3.2.3
Description:   A vulnerability was reported in Python. A remote user can cause denial of service conditions.

A remote user can send specially crafted POST request values to trigger hash collisions and cause significant performance degradation on the target server.

The original advisory is available at:

http://www.nruns.com/_downloads/advisory28122011.pdf

Alexander Klink of n.runs AG and Julian Walde of Technische Universitat Darmstadt reported this vulnerability. Scott A. Crosby and Dan S. Wallach of Rice University reported the theoretical attack.

Impact:   A remote user can cause performance to degrade on the target server.
Solution:   Oracle has issued a fix.

The Oracle advisory is available at:

https://blogs.oracle.com/sunsecurity/entry/multiple_vulnerabilities_in_python

Vendor URL:  python.org/ (Links to External Site)
Cause:   Randomization error
Underlying OS:  UNIX (Solaris - SunOS)
Underlying OS Comments:  10, 11.1

Message History:   This archive entry is a follow-up to the message listed below.
Dec 29 2011 Python Hash Table Collision Bug Lets Remote Users Deny Service



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