VDB-154545 · CVE-2019-19101 · GCVE-0-2019-19101

B&R Automation Studio prior 4.8.1 TLS Validation inadequate encryption

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.
5.9	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in B&R Automation Studio. The affected element is an unknown function of the component TLS Validation. Performing a manipulation results in inadequate encryption. This vulnerability is known as CVE-2019-19101. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in B&R Automation Studio (Automation Software). It has been classified as critical. This affects some unknown processing of the component TLS Validation. The manipulation with an unknown input leads to a inadequate encryption vulnerability. CWE is classifying the issue as CWE-326. The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A missing secure communication definition and an incomplete TLS validation in the upgrade service in B&R Automation Studio versions 4.0.x, 4.1.x, 4.2.x, < 4.3.11SP, < 4.4.9SP, < 4.5.5SP, < 4.6.4 and < 4.7.2 enable unauthenticated users to perform MITM attacks via the B&R upgrade server.

The weakness was published 04/29/2020 (Website). The advisory is shared at br-automation.com. This vulnerability is uniquely identified as CVE-2019-19101 since 11/18/2019. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

Upgrading to version 4.3.11SP, 4.4.9SP, 4.5.4SP, 4.6.3SP, 4.7.2 or 4.8.1 eliminates this vulnerability.

Similar entries are available at VDB-154544 and VDB-154546. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Automation Software

Vendor

Name

Automation Studio

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.9

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (Asea Brown Boveri Ltd. (ABB)): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Inadequate encryption
CWE: CWE-326 / CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Automation Studio 4.3.11SP/4.4.9SP/4.5.4SP/4.6.3SP/4.7.2/4.8.1

Timelineinfo

11/18/2019 🔍
04/29/2020 +163 days 🔍
04/29/2020 +0 days 🔍
05/06/2025 +1833 days 🔍

Sourcesinfo

Advisory: br-automation.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-19101 (🔍)
GCVE (CVE): GCVE-0-2019-19101
GCVE (VulDB): GCVE-100-154545
See also: 🔍

Entryinfo

Created: 04/29/2020 08:30
Updated: 05/06/2025 11:09
Changes: 04/29/2020 08:30 (40), 04/29/2020 08:39 (12), 10/14/2020 06:40 (1), 10/14/2020 06:51 (1), 06/04/2024 09:21 (33), 05/06/2025 11:09 (6)
Complete: 🔍
Cache ID: 216::103

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