VDB-114964 · CVE-2018-7502 · BID 103487

Beckhoff TwinCAT 2.11 R3 2259/3.1/3.1 Build 4022 Kernel Driver input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Beckhoff TwinCAT 2.11 R3 2259/3.1/3.1 Build 4022. This vulnerability affects unknown code of the component Kernel Driver. Executing a manipulation can lead to input validation. The identification of this vulnerability is CVE-2018-7502. The attack can only be executed locally. There is no exploit available.

Detailsinfo

A vulnerability was found in Beckhoff TwinCAT 2.11 R3 2259/3.1/3.1 Build 4022. It has been declared as critical. This vulnerability affects an unknown part of the component Kernel Driver. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Kernal drivers in Beckhoff TwinCAT 3.1 Build 4022.4, TwinCAT 2.11 R3 2259, and TwinCAT 3.1 lack proper validation of user-supplied pointer values. An attacker who is able to execute code on the target may be able to exploit this vulnerability to obtain SYSTEM privileges.

The bug was discovered 03/22/2018. The weakness was shared 03/23/2018 by Steven Seeley (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2018-7502 since 02/26/2018. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 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.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 103487†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.8

VulDB Base Score: 7.8
VulDB Temp Score: 7.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/26/2018 🔍
03/22/2018 +24 days 🔍
03/22/2018 +0 days 🔍
03/23/2018 +1 days 🔍
03/23/2018 +0 days 🔍
03/24/2018 +1 days 🔍
01/16/2020 +663 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Steven Seeley
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-7502 (🔍)
GCVE (CVE): GCVE-0-2018-7502
GCVE (VulDB): GCVE-100-114964
SecurityFocus: 103487 - Beckhoff TwinCAT CVE-2018-7502 Multiple Local Privilege Escalation Vulnerabilities

Entryinfo

Created: 03/24/2018 08:46
Updated: 01/16/2020 09:50
Changes: 03/24/2018 08:46 (58), 01/16/2020 09:50 (5)
Complete: 🔍
Cache ID: 216::103

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