Bug 470252 (CVE-2008-4310)

Summary: CVE-2008-4310 ruby: Incomplete fix for CVE-2008-3656
Product: [Other] Security Response Reporter: Jan Lieskovsky <jlieskov>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: jscotka, kreilly, mjc, mkoci, tagoh
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2008-12-17 09:01:09 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 461591, 470262, 472067    
Bug Blocks:    
Attachments:
Description Flags
Proper patch to address CVE-2008-4310 issue. none

Description Jan Lieskovsky 2008-11-06 13:56:52 UTC 
Common Vulnerabilities and Exposures assigned an identifier CVE-2008-3656 to
the following vulnerability:

Algorithmic complexity vulnerability in WEBrick::HTTP::DefaultFileHandler in
WEBrick in Ruby 1.8.5 and earlier, 1.8.5 through 1.8.6-p286, 1.8.7 through
1.8.7-p71, and 1.9 through r18423 allows context-dependent attackers to cause a
denial of service (CPU consumption) via a crafted HTTP request that is
processed by a backtracking regular expression.

Refences:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494401
http://www.ruby-lang.org/en/news/2008/08/08/multiple-vulnerabilities-in-ruby/

Vincent Danen from LinSec discovered the original patch for this flaw, provided by Red Hat, did not properly address this flaw.
Comment 3 Jan Lieskovsky 2008-11-06 14:06:39 UTC 
Created attachment 322718 [details]
Proper patch to address CVE-2008-4310 issue.
Comment 6 Mark J. Cox 2008-12-04 15:28:34 UTC 
removing embargo ready for us to push an update to correct this issue.
Comment 7 Tomas Hoger 2008-12-17 07:57:17 UTC 
Further details about this issue can be found here:
  http://www.openwall.com/lists/oss-security/2008/12/04/2
Comment 8 Red Hat Product Security 2008-12-17 09:01:09 UTC 
This issue was addressed in:

Red Hat Enterprise Linux:
  http://rhn.redhat.com/errata/RHSA-2008-0981.html