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Fencer Vulns
medium 5.0

CVE-2004-0983 json

The CGI module in Ruby 1.6 before 1.6.8, and 1.8 before 1.8.2, allows remote attackers to cause a denial of service (infinite loop and CPU…

published 2004-11-19 21 y ago modified 2026-06-16 4 mo ago also EUVD-2004-0981

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

The CGI module in Ruby 1.6 before 1.6.8, and 1.8 before 1.8.2, allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a certain HTTP request.

Patch / fix

  • ruby RHEL 3 1.6.8-9.EL3.3
  • irb RHEL 3 1.6.8-9.EL3.3
  • ruby-libs RHEL 3 1.6.8-9.EL3.3
  • ruby-mode RHEL 3 1.6.8-9.EL3.3
  • ruby-tcltk RHEL 3 1.6.8-9.EL3.3

red hat advisories RHSA-2004:635

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2004-0983 updated

security flaw

  • Red Hat Desktop version 3 irb 1.6.8-9.EL3.3, ruby 1.6.8-9.EL3.3, ruby-libs 1.6.8-9.EL3.3, ruby-mode 1.6.8-9.EL3.3, ruby-tcltk 1.6.8-9.EL3.3 Red Hat Enterprise Linux AS version 3 irb 1.6.8-9.EL3.3, ruby 1.6.8-9.EL3.3, ruby-libs 1.6.8-9.EL3.3, ruby-mode 1.6.8-9.EL3.3, ruby-tcltk 1.6.8-9.EL3.3 Red Hat Enterprise Linux ES version 3 irb 1.6.8-9.EL3.3, ruby 1.6.8-9.EL3.3, ruby-libs 1.6.8-9.EL3.3, ruby-mode 1.6.8-9.EL3.3, ruby-tcltk 1.6.8-9.EL3.3 Red Hat Enterprise Linux WS version 3 irb 1.6.8-9.EL3.3, ruby 1.6.8-9.EL3.3, ruby-libs 1.6.8-9.EL3.3, ruby-mode 1.6.8-9.EL3.3, ruby-tcltk 1.6.8-9.EL3.3
    fixed: vendor fix RHSA-2004:635

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.90% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Fix old broken CPEs.