Dell SupportAssist < 3.10 Multiple Vulnerabilities (DSA-2021-163)

high Nessus Plugin ID 153806

Language:

Synopsis

The remote Windows host contains a Dell SupportAssist that is affected by multiple vulnerabilities.

Description

According to its self-reported version number, the version of Dell SupportAssist Client Consumer is prior to 3.10. It is, therefore, affected by multiple vulnerabilities.

- An arbitrary file deletion vulnerability exists due to how Dell SupportAssist handles symbolic links and NTFS junction points. Symbolic links can be created by any(non-privileged) user under some object directories, but by themselves are not sufficient to successfully escalate privileges. However, combining them with a different object, such as the NTFS junction point allows for the exploitation. Support assist clean files functionality do not distinguish junction points from the physical folder and proceeds to clean the target of the junction that allows nonprivileged users to create junction points and delete arbitrary files on the system which can be accessed only by the admin. (CVE-2021-36286)

- An untrusted search path vulnerability exists that allows attackers to load an arbitrary .dll file via .dll planting/hijacking, only by a separate administrative action that is not a default part of the SOSInstallerTool.exe installation for executing arbitrary dll's. (CVE-2021-36297)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update Dell SupportAssist to version 3.10 or later.

Plugin Details

Severity: High

ID: 153806

File Name: dell_support_assist_DSA-2021-163.nasl

Version: 1.5

Type: local

Agent: windows

Family: Windows

Published: 10/1/2021

Updated: 10/25/2022

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 3.3

Vector: CVSS2#AV:L/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2021-36297

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:dell:supportassist

Required KB Items: installed_sw/Dell SupportAssist

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2021

Vulnerability Publication Date: 9/28/2021

Reference Information

CVE: CVE-2021-36286, CVE-2021-36297

IAVA: 2021-A-0444-S

Detections

Analytics