Vulnerability Monitor

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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 context-dependent attackers to cause a denial of service (CPU consumption) via a crafted HTTP request that is processed by a backtracking regular expression.

Published

2008-08-13T01:41:00.000

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.8 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

10.0

Impact Score

6.9

Weaknesses

Type: Primary
CWE-399

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	ruby-lang	ruby	≤ 1.8.5	Yes
Application	ruby-lang	ruby	1.6.8	Yes
Application	ruby-lang	ruby	1.8.0	Yes
Application	ruby-lang	ruby	1.8.1	Yes
Application	ruby-lang	ruby	1.8.1	Yes
Application	ruby-lang	ruby	1.8.2	Yes
Application	ruby-lang	ruby	1.8.2	Yes
Application	ruby-lang	ruby	1.8.2	Yes
Application	ruby-lang	ruby	1.8.2	Yes
Application	ruby-lang	ruby	1.8.3	Yes
Application	ruby-lang	ruby	1.8.3	Yes
Application	ruby-lang	ruby	1.8.3	Yes
Application	ruby-lang	ruby	1.8.3	Yes
Application	ruby-lang	ruby	1.8.4	Yes
Application	ruby-lang	ruby	1.8.4	Yes
Application	ruby-lang	ruby	1.8.4	Yes
Application	ruby-lang	ruby	1.8.4	Yes
Application	ruby-lang	ruby	1.8.5	Yes
Application	ruby-lang	ruby	1.8.5	Yes
Application	ruby-lang	ruby	1.8.5	Yes
Application	ruby-lang	ruby	1.8.5	Yes
Application	ruby-lang	ruby	1.8.5	Yes
Application	ruby-lang	ruby	1.8.5	Yes
Application	ruby-lang	ruby	1.8.5	Yes
Application	ruby-lang	ruby	1.8.5	Yes
Application	ruby-lang	ruby	1.8.5	Yes
Application	ruby-lang	ruby	1.8.5	Yes
Application	ruby-lang	ruby	1.8.5	Yes
Application	ruby-lang	ruby	1.8.6	Yes
Application	ruby-lang	ruby	1.8.6	Yes
Application	ruby-lang	ruby	1.8.6	Yes
Application	ruby-lang	ruby	1.8.6	Yes
Application	ruby-lang	ruby	1.8.6	Yes
Application	ruby-lang	ruby	1.8.6	Yes
Application	ruby-lang	ruby	1.8.7	Yes
Application	ruby-lang	ruby	1.8.7	Yes
Application	ruby-lang	ruby	1.8.7	Yes
Application	ruby-lang	ruby	1.8.7	Yes
Application	ruby-lang	ruby	1.8.7	Yes
Application	ruby-lang	ruby	1.8.7	Yes
Application	ruby-lang	ruby	1.8.7	Yes
Application	ruby-lang	ruby	1.8.7	Yes
Application	ruby-lang	ruby	1.9.0	Yes

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494401 ([email protected])
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html ([email protected])
http://secunia.com/advisories/31430 ([email protected])
http://secunia.com/advisories/31697 ([email protected])
http://secunia.com/advisories/32165 ([email protected])
http://secunia.com/advisories/32219 ([email protected])
http://secunia.com/advisories/32255 ([email protected])
http://secunia.com/advisories/32256 ([email protected])
http://secunia.com/advisories/32371 ([email protected])
http://secunia.com/advisories/33178 ([email protected])
http://secunia.com/advisories/35074 ([email protected])
http://security.gentoo.org/glsa/glsa-200812-17.xml ([email protected])
http://support.apple.com/kb/HT3549 ([email protected])
http://support.avaya.com/elmodocs2/security/ASA-2008-424.htm ([email protected])
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0264 ([email protected])
http://www.debian.org/security/2008/dsa-1651 ([email protected])
http://www.debian.org/security/2008/dsa-1652 ([email protected])
http://www.redhat.com/support/errata/RHSA-2008-0897.html ([email protected])
http://www.ruby-lang.org/en/news/2008/08/08/multiple-vulnerabilities-in-ruby/ Exploit ([email protected])
http://www.securityfocus.com/archive/1/495884/100/0/threaded ([email protected])
http://www.securityfocus.com/bid/30644 ([email protected])
http://www.securitytracker.com/id?1020654 ([email protected])
http://www.us-cert.gov/cas/techalerts/TA09-133A.html US Government Resource ([email protected])
http://www.vupen.com/english/advisories/2008/2334 ([email protected])
http://www.vupen.com/english/advisories/2009/1297 ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/44371 ([email protected])
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9682 ([email protected])
https://usn.ubuntu.com/651-1/ ([email protected])
https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00259.html ([email protected])
https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00299.html ([email protected])
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494401 (af854a3a-2127-422b-91ae-364da2661108)
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/31430 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/31697 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/32165 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/32219 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/32255 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/32256 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/32371 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/33178 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/35074 (af854a3a-2127-422b-91ae-364da2661108)
http://security.gentoo.org/glsa/glsa-200812-17.xml (af854a3a-2127-422b-91ae-364da2661108)
http://support.apple.com/kb/HT3549 (af854a3a-2127-422b-91ae-364da2661108)
http://support.avaya.com/elmodocs2/security/ASA-2008-424.htm (af854a3a-2127-422b-91ae-364da2661108)
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0264 (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2008/dsa-1651 (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2008/dsa-1652 (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2008-0897.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.ruby-lang.org/en/news/2008/08/08/multiple-vulnerabilities-in-ruby/ Exploit (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/archive/1/495884/100/0/threaded (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/30644 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1020654 (af854a3a-2127-422b-91ae-364da2661108)
http://www.us-cert.gov/cas/techalerts/TA09-133A.html US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2008/2334 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2009/1297 (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/44371 (af854a3a-2127-422b-91ae-364da2661108)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9682 (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/651-1/ (af854a3a-2127-422b-91ae-364da2661108)
https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00259.html (af854a3a-2127-422b-91ae-364da2661108)
https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00299.html (af854a3a-2127-422b-91ae-364da2661108)