CVE-2020-17408

NEC ExpressCluster ApplyConfig XML External Entity Processing Information Disclosure Vulnerability

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

This vulnerability allows remote attackers to disclose sensitive information on affected installations of NEC ExpressCluster 4.1. Authentication is not required to exploit this vulnerability. The specific flaw exists within the clpwebmc executable. Due to the improper restriction of XML External Entity (XXE) references, a specially-crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose information in the context of SYSTEM. Was ZDI-CAN-10801.

Esta vulnerabilidad permite a atacantes remotos revelar información confidencial sobre instalaciones afectadas de NEC ExpressCluster versión 4.1. No es requerida una autenticación para explotar esta vulnerabilidad. El fallo específico se presenta dentro del ejecutable clpwebmc. Debido a la restricción inadecuada de las referencias XML External Entity (XXE), un documento especialmente diseñado que especifica un URI hace que el analizador XML acceda al URI e inserte el contenido en el documento XML para su posterior procesamiento. Un atacante puede aprovechar esta vulnerabilidad para revelar información en el contexto de SYSTEM. Fue ZDI-CAN-10801

This vulnerability allows remote attackers to disclose sensitive information on affected installations of NEC ExpressCluster. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the clpwebmc executable. Due to the improper restriction of XML External Entity (XXE) references, a specially-crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose information in the context of SYSTEM.

*Credits: rgod

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-08-07 CVE Reserved
2020-09-08 CVE Published
2024-08-04 CVE Updated
2024-09-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-611: Improper Restriction of XML External Entity Reference

CAPEC

References (2)

URL	Tag	Source
https://www.zerodayinitiative.com/advisories/ZDI-20-1102	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://www.support.nec.co.jp/en/View.aspx?id=9510100319	2020-09-15

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Nec Search vendor "Nec"		Expresscluster X Search vendor "Nec" for product "Expresscluster X"				4.1 Search vendor "Nec" for product "Expresscluster X" and version "4.1"		windows		Affected
Nec Search vendor "Nec"		Expresscluster X Search vendor "Nec" for product "Expresscluster X"				4.2 Search vendor "Nec" for product "Expresscluster X" and version "4.2"		windows		Affected