CVE-2008-3656
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…
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EPSS puts the probability of exploitation in the next 30 days at 70.2%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 2.0
- 7.8 HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
- EPSS
- 70.20% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-399
- Affected
- ruby-lang/ruby
- Source
- cve@mitre.org
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494401
- http://lists.apple.com/archives/security-announce/2009/May/msg00002.html
- http://secunia.com/advisories/31430
- http://secunia.com/advisories/31697
- http://secunia.com/advisories/32165
- http://secunia.com/advisories/32219
- http://secunia.com/advisories/32255
- http://secunia.com/advisories/32256
- http://secunia.com/advisories/32371
- http://secunia.com/advisories/33178
- http://secunia.com/advisories/35074
- http://security.gentoo.org/glsa/glsa-200812-17.xml
- http://support.apple.com/kb/HT3549
- http://support.avaya.com/elmodocs2/security/ASA-2008-424.htm
- http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0264
- http://www.debian.org/security/2008/dsa-1651
- http://www.debian.org/security/2008/dsa-1652
- http://www.redhat.com/support/errata/RHSA-2008-0897.html
- http://www.ruby-lang.org/en/news/2008/08/08/multiple-vulnerabilities-in-ruby/Exploit
- http://www.securityfocus.com/archive/1/495884/100/0/threaded
- http://www.securityfocus.com/bid/30644
- http://www.securitytracker.com/id?1020654
- http://www.us-cert.gov/cas/techalerts/TA09-133A.htmlUS Government Resource
- http://www.vupen.com/english/advisories/2008/2334
- http://www.vupen.com/english/advisories/2009/1297
- https://exchange.xforce.ibmcloud.com/vulnerabilities/44371
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9682
- https://usn.ubuntu.com/651-1/
- https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00259.html
- https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00299.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.