SoftMaker Office Service Pack Installer ofw16_763.exe privileges management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.4$0-$5k0.00

A vulnerability, which was classified as problematic, was found in SoftMaker Office (version now known). Affected is some unknown processing of the file ofw16_763.exe of the component Service Pack Installer. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 12/31/2016 by Stefan Kanthak as Executable installers are vulnerable^WEVIL (case 43): SoftMaker's Office service pack installers allow escalation of privilege as not defined mailinglist post (Full-Disclosure). The advisory is available at seclists.org. The vendor was not involved in the coordination of the public release. Local access is required to approach this attack. Required for exploitation is a authentication. Successful exploitation requires user interaction by the victim. Technical details and a public exploit are known. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

A public exploit has been developed by Stefan Kanthak in Batch and been published immediately after the advisory. The exploit is shared for download at seclists.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 16 days. During that time the estimated underground price was around $0-$5k. The code used by the exploit is:

:WAIT
@If Not Exist "%TEMP%\7z*" Goto :WAIT
For /D %%! In ("%TEMP%\7z*") Do Set foobar=%%!
Copy "SENTINEL.DLL" "%foobar%\NTMARTA.DLL"
Copy "SENTINEL.DLL" "%foobar%\VERSION.DLL"
Copy "SENTINEL.DLL" "%foobar%\WINSPOOL.DRV"

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.4

VulDB Base Score: 4.8
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Stefan Kanthak
Programming Language: 🔍
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
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Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

12/15/2016 🔍
12/31/2016 +16 days 🔍
12/31/2016 +0 days 🔍
01/04/2017 +4 days 🔍
07/13/2020 +1286 days 🔍

Sourcesinfo

Advisory: Executable installers are vulnerable^WEVIL (case 43): SoftMaker's Office service pack installers allow escalation of privilege
Researcher: Stefan Kanthak
Status: Not defined
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 01/04/2017 18:33
Updated: 07/13/2020 18:52
Changes: 01/04/2017 18:33 (49), 07/13/2020 18:52 (1)
Complete: 🔍

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