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Category:   Application (Generic)  >   Ruby Vendors:   Matsumoto, Yukihiro
Ruby Hash Table Collision Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1027747
SecurityTracker URL:  http://securitytracker.com/id/1027747
CVE Reference:   CVE-2012-5371   (Links to External Site)
Date:  Nov 12 2012
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.9.x prior to 1.9.3 patchlevel 327
Description:   A vulnerability was reported in Ruby. A remote user can cause denial of service conditions.

A remote user can send specially crafted data to trigger hash collisions and cause excessive CPU consumption on the target system.

Jean-Philippe Aumasson reported this vulnerability.

Impact:   A remote user can cause excessive CPU consumption on the target system.
Solution:   The vendor has issued a fix (1.9.3 patchlevel 327).

The vendor's advisory is available at:

http://www.ruby-lang.org/en/news/2012/11/09/ruby19-hashdos-cve-2012-5371/

Vendor URL:  www.ruby-lang.org/en/news/2012/11/09/ruby19-hashdos-cve-2012-5371/ (Links to External Site)
Cause:   Randomization error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


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