CVE-2020-26574

Severity Score

9.6

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Leostream Connection Broker 8.2.x is affected by stored XSS. An unauthenticated attacker can inject arbitrary JavaScript code via the webquery.pl User-Agent HTTP header. It is rendered by the admins the next time they log in. The JavaScript injected can be used to force the admin to upload a malicious Perl script that will be executed as root via libMisc::browser_client. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

Leostream Connection Broker versión 8.2.x está afectado por una vulnerabilidad de tipo XSS almacenado. Un atacante no autenticado puede inyectar código JavaScript arbitrario por medio del encabezado HTTP User-Agent del archivo webquery.pl. Es procesado por los administradores la próxima vez que inician sesión. El JavaScript inyectado puede ser usado para obligar al administrador a cargar un script Perl malicioso que será ejecutado como root mediante la función libMisc::browser_client. NOTA: Esta vulnerabilidad solo afecta a los productos que ya no son compatibles con el mantenedor

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-10-06 CVE Reserved
2020-10-06 CVE Published
2023-06-22 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://adepts.of0x.cc/leostream-xss-to-rce	2024-08-04

URL	Date	SRC

URL	Date	SRC
https://www.leostream.com/resources/product-lifecycle	2024-05-17

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Leostream Search vendor "Leostream"		Connection Broker Search vendor "Leostream" for product "Connection Broker"				>= 8.2.15 <= 8.2.73 Search vendor "Leostream" for product "Connection Broker" and version " >= 8.2.15 <= 8.2.73"		-		Affected

* End Of Life in some or all products. Do not expect updates.