SumatraPDF 3.1.2 Installer privileges management

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.8	$0-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in SumatraPDF 3.1.2. This affects an unknown function of the component Installer. Performing a manipulation results in privileges management. The attack must be initiated from a local position. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in SumatraPDF 3.1.2. It has been classified as problematic. This affects some unknown functionality of the component 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 shared 02/07/2017 by Stefan Kanthak as Executable installers are vulnerable^WEVIL (case 48): SumatraPDF-3.1.2-installer.exe allows escalation of privilege as not defined mailinglist post (Full-Disclosure). It is possible to read the advisory at seclists.org. The mailinglist post contains:

NO ANSWER, not even an acknowledgement of receipt

Attacking locally is a requirement. A authentication is required for exploitation. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

A public exploit has been developed by Stefan Kanthak 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 17 days. During that time the estimated underground price was around $0-$5k.

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

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• SumatraPDF

Version

• 3.1.2

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

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

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

01/21/2017 🔍
02/07/2017 +17 days 🔍
02/07/2017 +0 days 🔍
02/13/2017 +6 days 🔍
08/13/2020 +1277 days 🔍

Sourcesinfo

Advisory: Executable installers are vulnerable^WEVIL (case 48): SumatraPDF-3.1.2-installer.exe allows escalation of privilege
Researcher: Stefan Kanthak
Status: Not defined

GCVE (VulDB): GCVE-100-96819
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/13/2017 09:42
Updated: 08/13/2020 16:09
Changes: 02/13/2017 09:42 (45), 08/13/2020 16:09 (1)
Complete: 🔍
Cache ID: 216::103

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Discussion

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