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TI-2006-05279 Aliases CVE-2006-5467GHSA-cgqx-jwj4-2jc4

The cgi.rb CGI library for Ruby 1.8 allows remote attackers to cause a denial of service…

Priority LOW 30CWE-399Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Partial
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-399 and the CVSS impact.

Summary

The cgi.rb CGI library for Ruby 1.8 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via an HTTP request with a multipart MIME body that contains an invalid boundary specifier, as demonstrated using a specifier that begins with a "-" instead of "--" and contains an inconsistent ID.

Why it matters now

EPSS 0.04523 91st percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:yukihiro_matsumoto:ruby:1.8:*:*:*:*:*:*:*1.8VulnerableYukihiro Matsumoto
  • cpe:2.3:a:yukihiro_matsumoto:ruby:1.8:*:*:*:*:*:*:* Versions 1.8 Vulnerable ·Yukihiro Matsumoto

Remediation

Red Hat 1 advisory

  • RHSA-2006:0729 Released 2006-11-08 · Red Hat rating Moderate
    ruby security update
    • Red Hat Desktop version 3 irb-1.6.8-9.EL3.8, irb-1.6.8-9.EL3.8.i386, ruby-1.6.8-9.EL3.8 +11
    • Red Hat Enterprise Linux AS (Advanced Server) version 2.1 irb-1.6.4-2.AS21.4.i386, ruby-1.6.4-2.AS21.4, ruby-1.6.4-2.AS21.4.i386 +4
    • Red Hat Enterprise Linux AS version 3 irb-1.6.8-9.EL3.8, irb-1.6.8-9.EL3.8.i386, irb-1.6.8-9.EL3.8.ia64 +25
    • Red Hat Enterprise Linux AS version 4 irb-1.8.1-7.EL4.8, irb-1.8.1-7.EL4.8.i386, irb-1.8.1-7.EL4.8.ia64 +25
    • Red Hat Enterprise Linux Desktop version 4 irb-1.8.1-7.EL4.8, irb-1.8.1-7.EL4.8.i386, ruby-1.8.1-7.EL4.8 +11
    • Red Hat Enterprise Linux ES version 2.1 irb-1.6.4-2.AS21.4.i386, ruby-1.6.4-2.AS21.4, ruby-1.6.4-2.AS21.4.i386 +4
    • Red Hat Enterprise Linux ES version 3 irb-1.6.8-9.EL3.8, irb-1.6.8-9.EL3.8.i386, irb-1.6.8-9.EL3.8.ia64 +18
    • Red Hat Enterprise Linux ES version 4 irb-1.8.1-7.EL4.8, irb-1.8.1-7.EL4.8.i386, irb-1.8.1-7.EL4.8.ia64 +18
    • Red Hat Enterprise Linux WS version 2.1 irb-1.6.4-2.AS21.4.i386, ruby-1.6.4-2.AS21.4, ruby-1.6.4-2.AS21.4.i386 +4
    • Red Hat Enterprise Linux WS version 3 irb-1.6.8-9.EL3.8, irb-1.6.8-9.EL3.8.i386, irb-1.6.8-9.EL3.8.ia64 +18
    • Red Hat Enterprise Linux WS version 4 irb-1.8.1-7.EL4.8, irb-1.8.1-7.EL4.8.i386, irb-1.8.1-7.EL4.8.ia64 +18

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Desktop version 3Fixed RHSA-2006:0729
Red Hat Enterprise Linux AS (Advanced Server) version 2.1 Fixed RHSA-2006:0729
Red Hat Enterprise Linux AS version 3Fixed RHSA-2006:0729
Red Hat Enterprise Linux AS version 4Fixed RHSA-2006:0729
Red Hat Enterprise Linux Desktop version 4Fixed RHSA-2006:0729
Red Hat Enterprise Linux ES version 2.1Fixed RHSA-2006:0729
Red Hat Enterprise Linux ES version 3Fixed RHSA-2006:0729
Red Hat Enterprise Linux ES version 4Fixed RHSA-2006:0729
Red Hat Enterprise Linux WS version 2.1Fixed RHSA-2006:0729
Red Hat Enterprise Linux WS version 3Fixed RHSA-2006:0729
Red Hat Enterprise Linux WS version 4Fixed RHSA-2006:0729

Timeline

  1. 2026-10-02 Threatist record created from CVE-2006-5467
  2. 2026-10-03 Alias added: GHSA-cgqx-jwj4-2jc4

References

Patch 5

Advisory 7

Other 3

  • TI-2005-01883 The XMLRPC server in utils.rb for the ruby library (libruby) 1.8 sets an invalid default… CVSS 2.0HIGH 7.5
  • TI-2005-02214 Ruby 1.6.x up to 1.6.8, 1.8.x up to 1.8.2, and 1.9.0 development up to 2005-09-01 allows… CVSS 2.0HIGH 7.5
  • TI-2006-03581 Multiple unspecified vulnerabilities in Ruby before 1.8.5 allow remote attackers to… CVSS 2.0MEDIUM 6.4
  • TI-2006-01876 The HTTP/XMLRPC server in Ruby before 1.8.2 uses blocking sockets, which allows attackers… CVSS 2.0MEDIUM 5.0
  • TI-2006-06067 The read_multipart function in cgi.rb in Ruby before 1.8.5-p2 does not properly detect… CVSS 2.0MEDIUM 5.0
  • TI-2004-00890 The CGI module in Ruby 1.6 before 1.6.8, and 1.8 before 1.8.2, allows remote attackers to… CVSS 2.0MEDIUM 5.0
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences