Home/CVE/Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows code injection if the first argument (aka the "c
CVE

CVE-2019-16255

Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows code injection if the first argument (aka the "c

Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows code injection if the first argument (aka the "command" argument) to Shell#[] or Shell#test in lib/shell.rb is untrusted data. An attacker can exploit this to call an arbitrary Ruby method.

HIGH · CVSS 8.1 EPSS 0.01157
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules3 YARA rules0

Affected Products & Versions

6
ruby-lang ruby>= 2.4.0 and <= 2.4.7
ruby-lang ruby>= 2.5.0 and <= 2.5.6
ruby-lang ruby>= 2.6.0 and <= 2.6.4
debian linuxall versions
opensuse leapall versions
oracle graalvmall versions

Public Exploits & PoCs

1
pochackerone.com · 327512hackerone.com

Sigma Hunt Rules

3
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumRuby on Rails Framework Exceptions
productmediumPotential Ruby Reverse Shell
productmediumRuby Inline Command Execution

Scoring & Timeline

8.1
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD26 Nov 2019 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Advisories

11
rhsaRHSA-2022:0582Moderate
rhsaRHSA-2022:0581Moderate
rhsaRHSA-2021:2230Moderate
rhsaRHSA-2021:2588Moderate
rhsaRHSA-2021:2104Moderate
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