Unrated severityNVD Advisory· Published Aug 13, 2008· Updated Apr 23, 2026
CVE-2008-3656
CVE-2008-3656
Description
Algorithmic complexity vulnerability in the WEBrick::HTTPUtils.split_header_value 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.
Affected products
43cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*+ 42 more
- cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*range: <=1.8.5
- cpe:2.3:a:ruby-lang:ruby:1.6.8:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.0:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.1:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.1:-9:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.2:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.2:preview2:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.2:preview3:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.2:preview4:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.3:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.3:preview1:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.3:preview2:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.3:preview3:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.4:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.4:preview1:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.4:preview2:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.4:preview3:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.5:p11:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.5:p113:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.5:p115:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.5:p12:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.5:p2:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.5:p35:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.5:preview1:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.5:preview2:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.5:preview3:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.5:preview4:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.5:preview5:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.6:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.6:p110:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.6:p114:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.6:preview1:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.6:preview2:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.6:preview3:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p17:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p22:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:p71:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:preview1:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:preview2:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:preview3:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.8.7:preview4:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:1.9.0:*:*:*:*:*:*:*
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
30- www.ruby-lang.org/en/news/2008/08/08/multiple-vulnerabilities-in-ruby/nvdExploit
- www.us-cert.gov/cas/techalerts/TA09-133A.htmlnvdUS Government Resource
- bugs.debian.org/cgi-bin/bugreport.cginvd
- lists.apple.com/archives/security-announce/2009/May/msg00002.htmlnvd
- secunia.com/advisories/31430nvd
- secunia.com/advisories/31697nvd
- secunia.com/advisories/32165nvd
- secunia.com/advisories/32219nvd
- secunia.com/advisories/32255nvd
- secunia.com/advisories/32256nvd
- secunia.com/advisories/32371nvd
- secunia.com/advisories/33178nvd
- secunia.com/advisories/35074nvd
- security.gentoo.org/glsa/glsa-200812-17.xmlnvd
- support.apple.com/kb/HT3549nvd
- support.avaya.com/elmodocs2/security/ASA-2008-424.htmnvd
- wiki.rpath.com/wiki/Advisories:rPSA-2008-0264nvd
- www.debian.org/security/2008/dsa-1651nvd
- www.debian.org/security/2008/dsa-1652nvd
- www.redhat.com/support/errata/RHSA-2008-0897.htmlnvd
- www.securityfocus.com/archive/1/495884/100/0/threadednvd
- www.securityfocus.com/bid/30644nvd
- www.securitytracker.com/idnvd
- www.vupen.com/english/advisories/2008/2334nvd
- www.vupen.com/english/advisories/2009/1297nvd
- exchange.xforce.ibmcloud.com/vulnerabilities/44371nvd
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9682nvd
- usn.ubuntu.com/651-1/nvd
- www.redhat.com/archives/fedora-package-announce/2008-October/msg00259.htmlnvd
- www.redhat.com/archives/fedora-package-announce/2008-October/msg00299.htmlnvd
News mentions
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