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lundi 22 avril 2019

OpenPLC v2/v3 modbus.cpp mapUnusedIO() memory corruption

A vulnerability has been found in OpenPLC v2/v3 and classified as critical. Affected by this vulnerability is the function mapUnusedIO() of the file modbus.cpp. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A buffer overflow vulnerability was discovered in the OpenPLC controller, in the OpenPLC_v2 and OpenPLC_v3 versions. It occurs in the modbus.cpp mapUnusedIO() function, which can cause a runtime crash of the PLC or possibly have unspecified other impact.

The weakness was published 04/22/2019. This vulnerability is known as CVE-2018-20818 since 04/21/2019. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/23/2019).

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

Product

Name

CPE 2.3

CPE 2.2

CVSSv3

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: ≈5.5
VulDB Temp Score: ≈5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2

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

Exploiting

Class: Memory corruption (CWE-119)
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

Threat Intelligence

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍

Countermeasures

Recommended: no mitigation known
0-Day Time: 🔒

Timeline

04/21/2019 CVE assigned
04/22/2019 Advisory disclosed
04/23/2019 VulDB entry created
04/23/2019 VulDB last update

Sources

CVE: CVE-2018-20818 (🔒)

Entry

Created: 04/23/2019 08:35 AM
Complete: 🔍

Lien vers l'article source

Auteur: VulDB

Catégories: VulDBNombre de vues: 164

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