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Category:   Application (Generic)  >   Ruby Vendors:   Matsumoto, Yukihiro
Ruby 'regex.c' Processing Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1021075
SecurityTracker URL:  http://securitytracker.com/id/1021075
CVE Reference:   CVE-2008-3443   (Links to External Site)
Date:  Oct 21 2008
Impact:   Denial of service via network
Exploit Included:  Yes  
Version(s): 1.8.5, 1.8.6-p286, 1.8.7-p71, and prior versions; 1.9 r18423 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 requests to trigger a memory leak in the regex engine and cause the target service to enter an infinite loop and then crash.

The vulnerability resides in 'regex.c'.

A demonstration exploit is available at:

http://www.milw0rm.com/exploits/6239

Laurent Gaffie reported this vulnerability in August 2008.

Impact:   A remote user can cause denial of service conditions.
Solution:   The original report indicates that the vendor has issued a fix.
Vendor URL:  ruby-lang.org/ (Links to External Site)
Cause:   State 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 21 2008 (Red Hat Issues Fix) Ruby 'regex.c' Processing Bug Lets Remote Users Deny Service
Red Hat has released a fix for Red Hat Enterprise Linux 2.1.
Oct 21 2008 (Red Hat Issues Fix) Ruby 'regex.c' Processing Bug Lets Remote Users Deny Service
Red Hat has released a fix for Red Hat Enterprise Linux 3.
Oct 21 2008 (Red Hat Issues Fix) Ruby 'regex.c' Processing Bug Lets Remote Users Deny Service
Red Hat has released a fix for Red Hat Enterprise Linux 4 and 5.



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