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.
CVSS Details
- CVSS 3.1 Base Score: 7.5
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Apple Osx Ruby | — | Upgrade macOS to the latest version | Dec 16, 2011 | Aug 12, 2008 |
| Centos_linux | — | Upgrade ruby-libsUpgrade ruby-tcltkUpgrade ruby-develUpgrade ruby-modeUpgrade rubyUpgrade ruby-irbUpgrade ruby-rdocUpgrade ruby-docsUpgrade ruby-ri | Dec 1, 2016 | Aug 12, 2008 |
| Freebsd | — | Upgrade rubyUpgrade ruby+pthreadsUpgrade ruby+pthreads+onigurumaUpgrade ruby+oniguruma | Dec 10, 2025 | Aug 16, 2008 |
| Gentoo Linux | — | Upgrade dev-lang/ruby. | Oct 30, 2017 | Aug 12, 2008 |
| Oracle_linux | — | Upgrade ruby-develUpgrade rubyUpgrade ruby-riUpgrade ruby-modeUpgrade ruby-irbUpgrade ruby-libsUpgrade ruby-rdocUpgrade ruby-docsUpgrade ruby-tcltk | Oct 16, 2024 | Aug 13, 2008 |
| Suse | — | Upgrade ruby-tkUpgrade ruby-doc-riUpgrade ruby-test-suiteUpgrade ruby-develUpgrade rubyUpgrade ruby-examplesUpgrade ruby-doc-html | Feb 17, 2015 | Aug 12, 2008 |
| Ubuntu | — | Upgrade libruby1.8Upgrade ruby1.8 | Nov 8, 2024 | Aug 13, 2008 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub