CVE-2019-16255

ruby: Code injection via command argument of Shell#test / Shell#[]

Severity Score

8.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Ruby versiones hasta 2.4.7, versiones 2.5.x hasta 2.5.6 y versiones 2.6.x hasta 2.6.4, permite una inyección de código si el primer argumento (también conocido como el argumento "command") para Shell#[] o Shell#test en la biblioteca lib/shell.rb es un dato no seguro. Un atacante puede explotar esto para llamar a un método de Ruby arbitrario.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-09-11 CVE Reserved
2019-11-26 CVE Published
2024-08-05 CVE Updated
2024-08-05 First Exploit
2024-08-26 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-94: Improper Control of Generation of Code ('Code Injection')

CAPEC

References (17)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2019/11/msg00025.html	Mailing List
https://lists.debian.org/debian-lts-announce/2019/12/msg00009.html	Mailing List
https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html	Mailing List
https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html	Mailing List
https://seclists.org/bugtraq/2019/Dec/31	Broken Link
https://seclists.org/bugtraq/2019/Dec/32	Broken Link
https://www.ruby-lang.org/ja/news/2019/10/01/ruby-2-4-8-released	Release Notes
https://www.ruby-lang.org/ja/news/2019/10/01/ruby-2-5-7-released	Release Notes
https://www.ruby-lang.org/ja/news/2019/10/01/ruby-2-6-5-released	Release Notes

URL	Date	SRC
https://hackerone.com/reports/327512	2024-08-05

URL	Date	SRC
https://www.oracle.com/security-alerts/cpujan2020.html	2023-04-30

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00041.html	2023-04-30
https://security.gentoo.org/glsa/202003-06	2023-04-30
https://www.debian.org/security/2019/dsa-4587	2023-04-30
https://www.ruby-lang.org/ja/news/2019/10/01/code-injection-shell-test-cve-2019-16255	2023-04-30
https://access.redhat.com/security/cve/CVE-2019-16255	2022-02-21
https://bugzilla.redhat.com/show_bug.cgi?id=1793683	2022-02-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				>= 2.4.0 <= 2.4.7 Search vendor "Ruby-lang" for product "Ruby" and version " >= 2.4.0 <= 2.4.7"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				>= 2.5.0 <= 2.5.6 Search vendor "Ruby-lang" for product "Ruby" and version " >= 2.5.0 <= 2.5.6"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				>= 2.6.0 <= 2.6.4 Search vendor "Ruby-lang" for product "Ruby" and version " >= 2.6.0 <= 2.6.4"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.1 Search vendor "Opensuse" for product "Leap" and version "15.1"		-		Affected
Oracle Search vendor "Oracle"		Graalvm Search vendor "Oracle" for product "Graalvm"				19.3.0.2 Search vendor "Oracle" for product "Graalvm" and version "19.3.0.2"		enterprise		Affected