CVE-2020-24916

Yaws 2.0.7 XML Injection / Command Injection

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

CGI implementation in Yaws web server versions 1.81 to 2.0.7 is vulnerable to OS command injection.

la implementación de CGI en el servidor web Yaws. (CVE-2020-24916) Una implementación de CGI en el servidor web Yaws versiones 1.81 hasta 2.0.7, es vulnerable a una inyección de comandos del Sistema Operativo.

Yaws versions 1.81 through 2.0.7 suffer from remote OS command injection and XML external entity injection vulnerabilities.

*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

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-08-28 CVE Reserved
2020-09-08 CVE Published
2024-08-04 CVE Updated
2024-08-04 First Exploit
2024-09-16 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

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

CAPEC

References (7)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2020/09/msg00022.html	Mailing List

URL	Date	SRC
https://github.com/vulnbe/poc-yaws-cgi-shell-injection	2024-08-04
https://packetstormsecurity.com/files/159106/Yaws-2.0.7-XML-Injection-Command-Injection.html	2024-08-04
https://vuln.be/post/yaws-xxe-and-shell-injections	2024-08-04

URL	Date	SRC
https://github.com/erlyaws/yaws/commits/master	2022-12-06

URL	Date	SRC
https://usn.ubuntu.com/4569-1	2022-12-06
https://www.debian.org/security/2020/dsa-4773	2022-12-06

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Yaws Search vendor "Yaws"		Yaws Search vendor "Yaws" for product "Yaws"				>= 1.81 <= 2.0.7 Search vendor "Yaws" for product "Yaws" and version " >= 1.81 <= 2.0.7"		-		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
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
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