CVE-2008-3656: High severity ruby vulnerability
Algorithmic complexity vulnerability in the WEBrick::HTTPUtils.splitheadervalue function in WEBrick::HTTP::DefaultFileHandler in WEBrick in Ruby 1.8.5 and earlier, 1.8.6 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.
Other sources
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/
— Red Hat
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2008-3656?
CVE-2008-3656 is classified as a denial of service vulnerability in Ruby's WEBrick server.
How do I fix CVE-2008-3656?
To fix CVE-2008-3656, upgrade to Ruby version 1.8.7-p72 or later.
What software is affected by CVE-2008-3656?
CVE-2008-3656 affects Ruby versions 1.8.1 through 1.8.7-p71 and versions of Ruby 1.9 up to r18423.
Can CVE-2008-3656 be exploited remotely?
Yes, CVE-2008-3656 can be exploited by context-dependent attackers to trigger denial of service remotely.
What functionalities does CVE-2008-3656 impact?
CVE-2008-3656 impacts the WEBrick::HTTPUtils.split_header_value function's ability to handle headers, leading to potential service downtime.