CVE-2019-5477

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A command injection vulnerability in Nokogiri v1.10.3 and earlier allows commands to be executed in a subprocess via Ruby's `Kernel.open` method. Processes are vulnerable only if the undocumented method `Nokogiri::CSS::Tokenizer#load_file` is being called with unsafe user input as the filename. This vulnerability appears in code generated by the Rexical gem versions v1.0.6 and earlier. Rexical is used by Nokogiri to generate lexical scanner code for parsing CSS queries. The underlying vulnerability was addressed in Rexical v1.0.7 and Nokogiri upgraded to this version of Rexical in Nokogiri v1.10.4.

Una vulnerabilidad de inyección de comandos en Nokogiri versión v1.10.3 y anteriores, permite que los comandos sean ejecutados en un subproceso por medio del método "Kernel.open" de Ruby. Los procesos son vulnerables solo si el método no documentado "Nokogiri::CSS::Tokenizer#load_file" está siendo llamado con una entrada de usuario no segura como el nombre de archivo. Esta vulnerabilidad aparece en un código generado por la gema Rexical versión v1.0.6 y anteriores. Nokogiri es usada por Rexical para generar código de escáner léxico para analizar consultas CSS. La vulnerabilidad subyacente fue abordada en Rexical versión v1.0.7 y Nokogiri actualizada a esta versión de Rexical en Nokogiri versión v1.10.4.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-01-04 CVE Reserved
2019-08-16 CVE Published
2024-08-04 CVE Updated
2024-08-09 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CAPEC

References (7)

URL	Tag	Source
https://github.com/tenderlove/rexical/blob/master/CHANGELOG.rdoc	Release Notes
https://lists.debian.org/debian-lts-announce/2019/09/msg00027.html	Mailing List
https://lists.debian.org/debian-lts-announce/2022/10/msg00018.html	Mailing List
https://lists.debian.org/debian-lts-announce/2022/10/msg00019.html	Mailing List

URL	Date	SRC

URL	Date	SRC
https://github.com/sparklemotion/nokogiri/issues/1915	2022-10-14

URL	Date	SRC
https://security.gentoo.org/glsa/202006-05	2022-10-14
https://usn.ubuntu.com/4175-1	2022-10-14

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Nokogiri Search vendor "Nokogiri"		Nokogiri Search vendor "Nokogiri" for product "Nokogiri"				<= 1.10.3 Search vendor "Nokogiri" for product "Nokogiri" and version " <= 1.10.3"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				19.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "19.04"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				19.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "19.10"		-		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"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected