Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2019-11644

Severity CVSS v4.0:
Pending analysis
Type:
CWE-427 Uncontrolled Search Path Element
Publication date:
17/05/2019
Last modified:
24/08/2020

Description

In the F-Secure installer in F-Secure SAFE for Windows before 17.6, F-Secure Internet Security before 17.6, F-Secure Anti-Virus before 17.6, F-Secure Client Security Standard and Premium before 14.10, F-Secure PSB Workstation Security before 12.01, and F-Secure Computer Protection Standard and Premium before 19.3, a local user can escalate their privileges through a DLL hijacking attack against the installer. The installer writes the file rm.exe to C:\Windows\Temp and then executes it. The rm.exe process then attempts to load several DLLs from its current directory. Non-admin users are able to write to this folder, so an attacker can create a malicious C:\Windows\Temp\OLEACC.dll file. When an admin runs the installer, rm.exe will execute the attacker's DLL in an elevated security context.

Impact

Vector 3.x
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:M/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
6.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:f-secure:client_security:*:*:*:*:premium:*:*:* 14.10 (excluding)
cpe:2.3:a:f-secure:client_security:*:*:*:*:standard:*:*:* 14.10 (excluding)
cpe:2.3:a:f-secure:computer_protection:*:*:*:*:premium:*:*:* 19.3 (excluding)
cpe:2.3:a:f-secure:computer_protection:*:*:*:*:standard:*:*:* 19.3 (excluding)
cpe:2.3:a:f-secure:internet_security:*:*:*:*:*:*:*:* 17.6 (excluding)
cpe:2.3:a:f-secure:psb_workstation_security:*:*:*:*:*:*:*:* 12.01 (excluding)
cpe:2.3:a:f-secure:safe:*:*:*:*:*:windows:*:* 17.6 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools