Description

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.

Severity

 

CVSS Version 3.x CVSS Version 2.0

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score:  5.5 MEDIUM

Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

CVSS 2.0 Severity and Metrics:

NIST: NVD

Base Score:  3.6 LOW

Vector:  (AV:L/AC:L/Au:N/C:N/I:P/A:P)

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://support.eset.com/en/ca7794-local-privilege-escalation-vulnerability-fixed-in-eset-products-for-windows	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-276	Incorrect Default Permissions	NIST

Known Affected Software Configurations Switch to CPE 2.2

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Change History

1 change records found show changes

Initial Analysis by NIST 2/02/2021 1:34:14 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 1212 characters. View Entire Change Record OR *cpe:2.3:a:eset:endpoint_antivirus:*:*:*:*:*:-:*:* versions up to (including) 7.3 *cpe:2.3:a:eset:endpoint_security:*:*:*:*:*:*:*:* versions up to (including) 7.3 *cpe:2.3:a:eset:file_security:*:*:*:*:*:windows_server:*:* versions up to (including) 7.2 *cpe:2.3:a:eset:internet_security:*:*:*:*:*:*:*:* versions up to (including) 13.2 *cpe:2.3:a:eset:internet_security:1294:*:*:*:*:*:*:* *cpe:2.3:a:eset:mail_security:*:*:*:*:*:domino:*:* versions up to (including) 7
Added	CVSS V2		NIST (AV:L/AC:L/Au:N/C:N/I:P/A:P)
Added	CVSS V3.1		NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Added	CWE		NIST CWE-276
Changed	Reference Type	https://support.eset.com/en/ca7794-local-privilege-escalation-vulnerability-fixed-in-eset-products-for-windows No Types Assigned	https://support.eset.com/en/ca7794-local-privilege-escalation-vulnerability-fixed-in-eset-products-for-windows Vendor Advisory