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CVE-2008-4310

WEBrick Denial of Service Vulnerability

7.8 HighPublic exploitFix available

CVE-2008-4310 is a high vulnerability (CVSS 7.8) in Ruby-lang Ruby, published December 9, 2008. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 13.6%, the 96th percentile. Fixed in webrick 1.3.1.

What does this mean?
Severity
7.8 HighCVSS 2.0, NVD
Exploit chance
13.6%EPSS, 96th percentile
Exploitation
None known1 public exploit
Fixed in
1.3.1webrick +54 more

Description

httputils.rb in WEBrick in Ruby 1.8.1 and 1.8.5, as used in Red Hat Enterprise Linux 4 and 5, allows remote attackers to cause a denial of service (CPU consumption) via a crafted HTTP request. NOTE: this issue exists because of an incomplete fix for CVE-2008-3656.

Exploit likelihood

13.6%Up 12.3 points since Feb 4, 2022
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
webrick
RubyGems
before 1.3.1
1.3.1
irb
Red Hat:enterprise_linux:4::as
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby
Red Hat:enterprise_linux:4::as
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-debuginfo
Red Hat:enterprise_linux:4::as
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-devel
Red Hat:enterprise_linux:4::as
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-docs
Red Hat:enterprise_linux:4::as
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-libs
Red Hat:enterprise_linux:4::as
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-mode
Red Hat:enterprise_linux:4::as
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-tcltk
Red Hat:enterprise_linux:4::as
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
irb
Red Hat:enterprise_linux:4::desktop
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
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Affected packages
PackageAffectedFixed
ruby
Red Hat:enterprise_linux:4::desktop
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-debuginfo
Red Hat:enterprise_linux:4::desktop
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-devel
Red Hat:enterprise_linux:4::desktop
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-docs
Red Hat:enterprise_linux:4::desktop
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-libs
Red Hat:enterprise_linux:4::desktop
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-mode
Red Hat:enterprise_linux:4::desktop
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-tcltk
Red Hat:enterprise_linux:4::desktop
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
irb
Red Hat:enterprise_linux:4::es
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby
Red Hat:enterprise_linux:4::es
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-debuginfo
Red Hat:enterprise_linux:4::es
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-devel
Red Hat:enterprise_linux:4::es
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-docs
Red Hat:enterprise_linux:4::es
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-libs
Red Hat:enterprise_linux:4::es
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-mode
Red Hat:enterprise_linux:4::es
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-tcltk
Red Hat:enterprise_linux:4::es
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
irb
Red Hat:enterprise_linux:4::ws
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby
Red Hat:enterprise_linux:4::ws
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-debuginfo
Red Hat:enterprise_linux:4::ws
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-devel
Red Hat:enterprise_linux:4::ws
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-docs
Red Hat:enterprise_linux:4::ws
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-libs
Red Hat:enterprise_linux:4::ws
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-mode
Red Hat:enterprise_linux:4::ws
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby-tcltk
Red Hat:enterprise_linux:4::ws
before 0:1.8.1-7.el4_7.2
0:1.8.1-7.el4_7.2
ruby
Red Hat:enterprise_linux:5::client_workstation
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-debuginfo
Red Hat:enterprise_linux:5::client_workstation
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-devel
Red Hat:enterprise_linux:5::client_workstation
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-mode
Red Hat:enterprise_linux:5::client_workstation
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby
Red Hat:enterprise_linux:5::client
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-debuginfo
Red Hat:enterprise_linux:5::client
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-docs
Red Hat:enterprise_linux:5::client
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-irb
Red Hat:enterprise_linux:5::client
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-libs
Red Hat:enterprise_linux:5::client
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-rdoc
Red Hat:enterprise_linux:5::client
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-ri
Red Hat:enterprise_linux:5::client
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-tcltk
Red Hat:enterprise_linux:5::client
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby
Red Hat:enterprise_linux:5::server
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-debuginfo
Red Hat:enterprise_linux:5::server
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-devel
Red Hat:enterprise_linux:5::server
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-docs
Red Hat:enterprise_linux:5::server
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-irb
Red Hat:enterprise_linux:5::server
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-libs
Red Hat:enterprise_linux:5::server
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-mode
Red Hat:enterprise_linux:5::server
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-rdoc
Red Hat:enterprise_linux:5::server
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-ri
Red Hat:enterprise_linux:5::server
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6
ruby-tcltk
Red Hat:enterprise_linux:5::server
before 0:1.8.5-5.el5_2.6
0:1.8.5-5.el5_2.6

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBRuby 1.9 - 'WEBrick::HTTP::DefaultFileHandler' Crafted HTTP Request Denial of Service2008-08-11

What each source reports

NVD Score used7.8

httputils.rb in WEBrick in Ruby 1.8.1 and 1.8.5, as used in Red Hat Enterprise Linux 4 and 5, allows remote attackers to cause a denial of service (CPU consumption) via a crafted HTTP request. NOTE: this issue exists because of an incomplete fix for CVE-2008-3656.

Record
CVE-2008-4310
CVSS 2.0
7.8 HighAV:N/AC:L/Au:N/C:N/I:N/A:C
Weakness
CWE-399
Updated
2026-11-02
CVE ListNo score

httputils.rb in WEBrick in Ruby 1.8.1 and 1.8.5, as used in Red Hat Enterprise Linux 4 and 5, allows remote attackers to cause a denial of service (CPU consumption) via a crafted HTTP request. NOTE: this issue exists because of an incomplete fix for CVE-2008-3656.

Record
CVE-2008-4310
Updated
2026-11-02
EUVDEUVD-2022-5565No score

httputils.rb in WEBrick in Ruby 1.8.1 and 1.8.5, as used in Red Hat Enterprise Linux 4 and 5, allows remote attackers to cause a denial of service (CPU consumption) via a crafted HTTP request. NOTE: this issue exists because of an incomplete fix for CVE-2008-3656.

Record
EUVD-2022-5565
Updated
2026-11-03
GitHub AdvisoriesGHSA-wfrc-r6c6-7j9rNo score

WEBrick Denial of Service Vulnerability

httputils.rb in WEBrick in Ruby 1.8.1 and 1.8.5, as used in Red Hat Enterprise Linux 4 and 5, allows remote attackers to cause a denial of service (CPU consumption) via a crafted HTTP request. NOTE: this issue exists because of an incomplete fix for CVE-2008-3656.

Record
GHSA-wfrc-r6c6-7j9r
Weakness
CWE-400
Updated
2026-11-02
OSVGHSA-wfrc-r6c6-7j9rNo score

WEBrick Denial of Service Vulnerability

httputils.rb in WEBrick in Ruby 1.8.1 and 1.8.5, as used in Red Hat Enterprise Linux 4 and 5, allows remote attackers to cause a denial of service (CPU consumption) via a crafted HTTP request. NOTE: this issue exists because of an incomplete fix for CVE-2008-3656.

Record
GHSA-wfrc-r6c6-7j9r
Weakness
CWE-400
Updated
2026-11-02

History

History
RecordedChangedSources
facts
aliasesEUVD
first indexedCVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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