SecurityTracker.com
    Home    |    View Topics    |    Search    |    Contact Us    |   

SecurityTracker
Archives


 


Category:   Application (Generic)  >   Ruby Vendors:   Matsumoto, Yukihiro
Ruby Hash Table Collision Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1026474
SecurityTracker URL:  http://securitytracker.com/id/1026474
CVE Reference:   CVE-2011-4815   (Links to External Site)
Date:  Dec 29 2011
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 1.8.7-p356 and prior versions
Description:   A vulnerability was reported in Ruby. 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.

Version 1.9.x is not affected.

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:   The vendor has issued a fix (1.8.7-p357).

The vendor's advisory is available at:

http://www.ruby-lang.org/en/news/2011/12/28/denial-of-service-attack-was-found-for-rubys-hash-algorithm/

Vendor URL:  www.ruby-lang.org/en/news/2011/12/28/denial-of-service-attack-was-found-for-rubys-hash-algorithm/ (Links to External Site)
Cause:   Randomization error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jan 30 2012 (Red Hat Issues Fix) Ruby Hash Table Collision Bug Lets Remote Users Deny Service
Red Hat has issued a fix for Red Hat Enterprise Linux 6.
Jan 30 2012 (Red Hat Issues Fix) Ruby Hash Table Collision Bug Lets Remote Users Deny Service
Red Hat has issued a fix for Red Hat Enterprise Linux 4 and 5.



 Source Message Contents



[Original Message Not Available for Viewing]


Go to the Top of This SecurityTracker Archive Page





Home   |    View Topics   |    Search   |    Contact Us

This web site uses cookies for web analytics. Learn More

Copyright 2019, SecurityGlobal.net LLC