VDB-79887 · CVE-2015-7917 · BID 78909

Open Automation OPC Systems.NET up to 8.00.0023 DLL untrusted search path

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.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Open Automation OPC Systems.NET up to 8.00.0023 and classified as problematic. Impacted is an unknown function of the component DLL Handler. Performing a manipulation results in untrusted search path. This vulnerability is reported as CVE-2015-7917. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in Open Automation OPC Systems.NET up to 8.00.0023 (Automation Software). This affects an unknown part of the component DLL Handler. The manipulation with an unknown input leads to a untrusted search path vulnerability. CWE is classifying the issue as CWE-426. The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Untrusted search path vulnerability in Open Automation OPC Systems.NET 8.00.0023 and earlier allows local users to gain privileges via a Trojan horse DLL in an unspecified directory.

The weakness was disclosed 12/23/2015 (Website). It is possible to read the advisory at ics-cert.us-cert.gov. This vulnerability is uniquely identified as CVE-2015-7917 since 10/22/2015. Attacking locally is a requirement. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1574 according to MITRE ATT&CK.

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

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 78909†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Automation Software

Vendor

Open Automation

Name

OPC Systems.NET

Version

8.00.0023

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.2
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.2
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Untrusted search path
CWE: CWE-426
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

Timelineinfo

10/22/2015 🔍
12/10/2015 +49 days 🔍
12/22/2015 +12 days 🔍
12/23/2015 +1 days 🔍
12/25/2015 +2 days 🔍
05/20/2018 +877 days 🔍

Sourcesinfo

Advisory: ics-cert.us-cert.gov
Status: Not defined

CVE: CVE-2015-7917 (🔍)
GCVE (CVE): GCVE-0-2015-7917
GCVE (VulDB): GCVE-100-79887
SecurityFocus: 78909 - OPC Systems.NET CVE-2015-7917 DLL Loading Local Privilege Escalation Vulnerability

Entryinfo

Created: 12/25/2015 12:24
Updated: 05/20/2018 10:33
Changes: 12/25/2015 12:24 (50), 05/20/2018 10:33 (10)
Complete: 🔍
Cache ID: 216::103