CVE-2020-26941

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A local (authenticated) low-privileged user can exploit a behavior in an ESET installer to achieve arbitrary file overwrite (deletion) of any file via a symlink, due to insecure permissions. The possibility of exploiting this vulnerability is limited and can only take place during the installation phase of ESET products. Furthermore, exploitation can only succeed when Self-Defense is disabled. Affected products are: ESET NOD32 Antivirus, ESET Internet Security, ESET Smart Security, ESET Smart Security Premium versions 13.2 and lower; ESET Endpoint Antivirus, ESET Endpoint Security, ESET NOD32 Antivirus Business Edition, ESET Smart Security Business Edition versions 7.3 and lower; ESET File Security for Microsoft Windows Server, ESET Mail Security for Microsoft Exchange Server, ESET Mail Security for IBM Domino, ESET Security for Kerio, ESET Security for Microsoft SharePoint Server versions 7.2 and lower.

Un usuario local (autenticado) con pocos privilegios puede explotar un comportamiento en un instalador de ESET para lograr la sobrescritura (eliminación) arbitraria de cualquier archivo por medio de un enlace simbólico, debido a permisos no seguros. La posibilidad de aprovechar esta vulnerabilidad es limitada y solo puede tener lugar durante la fase de instalación de los productos ESET. Además, la explotación solo puede tener éxito cuando Self-Defense está desactivada. Los productos afectados son: ESET NOD32 Antivirus, ESET Internet Security, ESET Smart Security, ESET Smart Security Premium versiones 13.2 y anteriores; ESET Endpoint Antivirus, ESET Endpoint Security, ESET NOD32 Antivirus Business Edition, ESET Smart Security Business Edition versiones 7.3 y anteriores; ESET File Security para Microsoft Windows Server, ESET Mail Security para Microsoft Exchange Server, ESET Mail Security para IBM Domino, ESET Security para Kerio

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-10-10 CVE Reserved
2021-01-21 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-276: Incorrect Default Permissions

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://support.eset.com/en/ca7794-local-privilege-escalation-vulnerability-fixed-in-eset-products-for-windows	2021-02-02

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Eset Search vendor "Eset"		Endpoint Antivirus Search vendor "Eset" for product "Endpoint Antivirus"				<= 7.3 Search vendor "Eset" for product "Endpoint Antivirus" and version " <= 7.3"		-		Affected
Eset Search vendor "Eset"		Endpoint Security Search vendor "Eset" for product "Endpoint Security"				<= 7.3 Search vendor "Eset" for product "Endpoint Security" and version " <= 7.3"		-		Affected
Eset Search vendor "Eset"		File Security Search vendor "Eset" for product "File Security"				<= 7.2 Search vendor "Eset" for product "File Security" and version " <= 7.2"		windows_server		Affected
Eset Search vendor "Eset"		Internet Security Search vendor "Eset" for product "Internet Security"				<= 13.2 Search vendor "Eset" for product "Internet Security" and version " <= 13.2"		-		Affected
Eset Search vendor "Eset"		Internet Security Search vendor "Eset" for product "Internet Security"				1294 Search vendor "Eset" for product "Internet Security" and version "1294"		-		Affected
Eset Search vendor "Eset"		Mail Security Search vendor "Eset" for product "Mail Security"				<= 7.2 Search vendor "Eset" for product "Mail Security" and version " <= 7.2"		domino		Affected
Eset Search vendor "Eset"		Mail Security Search vendor "Eset" for product "Mail Security"				<= 7.2 Search vendor "Eset" for product "Mail Security" and version " <= 7.2"		exchange_server		Affected
Eset Search vendor "Eset"		Nod32 Antivirus Search vendor "Eset" for product "Nod32 Antivirus"				<= 7.3 Search vendor "Eset" for product "Nod32 Antivirus" and version " <= 7.3"		business		Affected
Eset Search vendor "Eset"		Nod32 Antivirus Search vendor "Eset" for product "Nod32 Antivirus"				<= 13.2 Search vendor "Eset" for product "Nod32 Antivirus" and version " <= 13.2"		-		Affected
Eset Search vendor "Eset"		Security Search vendor "Eset" for product "Security"				<= 7.2 Search vendor "Eset" for product "Security" and version " <= 7.2"		kerio		Affected
Eset Search vendor "Eset"		Security Search vendor "Eset" for product "Security"				<= 7.2 Search vendor "Eset" for product "Security" and version " <= 7.2"		sharepoint_server		Affected
Eset Search vendor "Eset"		Smart Security Search vendor "Eset" for product "Smart Security"				<= 7.3 Search vendor "Eset" for product "Smart Security" and version " <= 7.3"		business		Affected
Eset Search vendor "Eset"		Smart Security Search vendor "Eset" for product "Smart Security"				<= 13.2 Search vendor "Eset" for product "Smart Security" and version " <= 13.2"		-		Affected
Eset Search vendor "Eset"		Smart Security Search vendor "Eset" for product "Smart Security"				<= 13.2 Search vendor "Eset" for product "Smart Security" and version " <= 13.2"		premium		Affected