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TI-2012-04544 Aliases CVE-2012-5371GHSA-phrv-cj28-9h57

Ruby (aka CRuby) 1.9 before 1.9.3-p327 and 2.0 before r37575 computes hash values without…

Priority LOW 29CWE-310Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · Partial
Fix status
Partial Red Hat: 4 fixed, 1 without a fix

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.

Summary

Ruby (aka CRuby) 1.9 before 1.9.3-p327 and 2.0 before r37575 computes hash values without properly restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table, as demonstrated by a universal multicollision attack against a variant of the MurmurHash2 algorithm, a different vulnerability than CVE-2011-4815.

Why it matters now

EPSS 0.0333 88th percentileScored 2026-11-07
Fix Partial Red Hat: 4 advisoriesRed Hat: 4 fixed, 1 without a fix

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 · 9

CPEVersionsRoleVendor
cpe:2.3:a:ruby-lang:ruby:*:p286:*:*:*:*:*:*up to 1.9.3Vulnerableruby
cpe:2.3:a:ruby-lang:ruby:1.9:*:*:*:*:*:*:*1.9Vulnerableruby
cpe:2.3:a:ruby-lang:ruby:1.9.1:*:*:*:*:*:*:*1.9.1Vulnerableruby
cpe:2.3:a:ruby-lang:ruby:1.9.2:*:*:*:*:*:*:*1.9.2Vulnerableruby
cpe:2.3:a:ruby-lang:ruby:1.9.3:*:*:*:*:*:*:*1.9.3Vulnerableruby
cpe:2.3:a:ruby-lang:ruby:1.9.3:p0:*:*:*:*:*:*1.9.3 p0Vulnerableruby
cpe:2.3:a:ruby-lang:ruby:1.9.3:p125:*:*:*:*:*:*1.9.3 p125Vulnerableruby
cpe:2.3:a:ruby-lang:ruby:1.9.3:p194:*:*:*:*:*:*1.9.3 p194Vulnerableruby
cpe:2.3:a:ruby-lang:ruby:2.0:*:*:*:*:*:*:*2.0Vulnerableruby
  • cpe:2.3:a:ruby-lang:ruby:*:p286:*:*:*:*:*:* Versions up to 1.9.3 Vulnerable ·ruby
  • cpe:2.3:a:ruby-lang:ruby:1.9:*:*:*:*:*:*:* Versions 1.9 Vulnerable ·ruby
  • cpe:2.3:a:ruby-lang:ruby:1.9.1:*:*:*:*:*:*:* Versions 1.9.1 Vulnerable ·ruby
  • cpe:2.3:a:ruby-lang:ruby:1.9.2:*:*:*:*:*:*:* Versions 1.9.2 Vulnerable ·ruby
  • cpe:2.3:a:ruby-lang:ruby:1.9.3:*:*:*:*:*:*:* Versions 1.9.3 Vulnerable ·ruby
  • cpe:2.3:a:ruby-lang:ruby:1.9.3:p0:*:*:*:*:*:* Versions 1.9.3 p0 Vulnerable ·ruby
  • cpe:2.3:a:ruby-lang:ruby:1.9.3:p125:*:*:*:*:*:* Versions 1.9.3 p125 Vulnerable ·ruby
  • cpe:2.3:a:ruby-lang:ruby:1.9.3:p194:*:*:*:*:*:* Versions 1.9.3 p194 Vulnerable ·ruby
  • cpe:2.3:a:ruby-lang:ruby:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·ruby

Remediation

Red Hat 4 advisories

  • RHSA-2026:8838 Released 2026-04-17 · Red Hat rating Moderate
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images ruby4.0-4.0.0-33.3.hum1@aarch64, ruby4.0-4.0.0-33.3.hum1@src, ruby4.0-4.0.0-33.3.hum1@x86_64 +10
  • RHSA-2026:7307 Released 2026-04-09 · Red Hat rating Moderate
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images ruby3.4-3.4.8-31.1.hum1@aarch64, ruby3.4-3.4.8-31.1.hum1@src, ruby3.4-3.4.8-31.1.hum1@x86_64 +10
  • RHSA-2026:7305 Released 2026-04-09 · Red Hat rating Moderate
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images ruby3.3-3.3.10-23.1.hum1@aarch64, ruby3.3-3.3.10-23.1.hum1@src, ruby3.3-3.3.10-23.1.hum1@x86_64 +10
Show 1 more Red Hat advisories
  • RHSA-2013:0582 Released 2013-02-28 · Red Hat rating Moderate
    Red Hat OpenShift Enterprise 1.1.1 update
    • Red Hat OpenShift Enterprise Infrastructure graphviz-2.26.0-10.el6, graphviz-devel-2.26.0-10.el6, graphviz-doc-2.26.0-10.el6 +42
    • Red Hat OpenShift Enterprise JBoss EAP add-on openshift-origin-cartridge-jbosseap-6.0-1.0.4-1.el6op
    • Red Hat OpenShift Enterprise Node openshift-origin-cartridge-cron-1.4-1.0.3-1.el6op, openshift-origin-cartridge-diy-0.1-1.0.3-1.el6op, openshift-origin-cartridge-haproxy-1.4-1.0.4-1.el6op +46

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Hardened ImagesAffectedNo fix yet
Red Hat Hardened ImagesFixed RHSA-2026:7305, RHSA-2026:7307, RHSA-2026:8838
Red Hat OpenShift Enterprise InfrastructureFixed RHSA-2013:0582
Red Hat OpenShift Enterprise JBoss EAP add-onFixed RHSA-2013:0582
Red Hat OpenShift Enterprise NodeFixed RHSA-2013:0582

Timeline

  1. 2026-10-02 Threatist record created from CVE-2012-5371
  2. 2026-10-03 Alias added: GHSA-phrv-cj28-9h57

References

Patch 2

Advisory 1

Other 5

  • TI-2026-71508 Integer overflow in GitLab allows code execution on the server KEVCVSS 3.1CRITICAL 10.0
  • TI-2017-12709 Ruby before 2.4.3 allows Net::FTP command injection. CVSS 3.0HIGH 8.8
  • TI-2008-03501 Algorithmic complexity vulnerability in the WEBrick::HTTPUtils.split_header_value… CVSS 2.0HIGH 7.8
  • TI-2021-09891 In Ruby through 3.0 on Windows, a remote attacker can submit a crafted path when a Web… CVSS 3.1HIGH 7.5
  • TI-2013-03637 Heap-based buffer overflow in Ruby 1.8, 1.9 before 1.9.3-p484, 2.0 before 2.0.0-p353, 2.1… CVSS 2.0MEDIUM 6.8
  • TI-2018-11751 An issue was discovered in the OpenSSL library in Ruby before 2.3.8, 2.4.x before 2.4.5… CVSS 3.0CRITICAL 9.8
See all 92 →

Sources

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