OPC Foundation OPC UA .NET Standard up to 1.4.357.28 Random Generator insufficiently protected credentials

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability has been found in OPC Foundation OPC UA .NET Standard up to 1.4.357.28 and classified as critical. This affects an unknown function of the component Random Generator. Performing a manipulation results in insufficiently protected credentials. This vulnerability is known as CVE-2019-19135. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in OPC Foundation OPC UA .NET Standard up to 1.4.357.28. It has been classified as critical. This affects an unknown part of the component Random Generator. The manipulation with an unknown input leads to a insufficiently protected credentials vulnerability. CWE is classifying the issue as CWE-522. The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In OPC Foundation OPC UA .NET Standard codebase 1.4.357.28, servers do not create sufficiently random numbers in OPCFoundation.NetStandard.Opc.Ua before 1.4.359.31, which allows man in the middle attackers to reuse encrypted user credentials sent over the network.

The weakness was published 03/16/2020 (Website). The advisory is shared at opcfoundation.org. This vulnerability is uniquely identified as CVE-2019-19135 since 11/20/2019. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1552 for this issue.

Upgrading to version 1.4.359.31 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.4
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Insufficiently protected credentials
CWE: CWE-522
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OPC UA .NET Standard 1.4.359.31

Timelineinfo

11/20/2019 🔍
03/16/2020 +117 days 🔍
03/17/2020 +1 days 🔍
03/17/2020 +0 days 🔍

Sourcesinfo

Advisory: opcfoundation.org
Status: Not defined

CVE: CVE-2019-19135 (🔍)
GCVE (CVE): GCVE-0-2019-19135
GCVE (VulDB): GCVE-100-151665

Entryinfo

Created: 03/17/2020 07:51
Updated: 03/17/2020 08:27
Changes: 03/17/2020 07:51 (39), 03/17/2020 08:27 (17)
Complete: 🔍
Cache ID: 216::103

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