VDB-131378 · CVE-2019-9590 · GCVE-0-2019-9590

TENGCONTROL T-920 PLC 5.5 Service Port 502 Request Persistent input validation

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.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in TENGCONTROL T-920 PLC 5.5. Impacted is an unknown function of the component Service Port 502. Such manipulation with the input \x19\xb2\x00\x00\x00\x06\x43\x01\x00\xac\xff\x00 as part of Request leads to input validation (Persistent). This vulnerability is listed as CVE-2019-9590. The attack may be performed from remote. There is no available exploit. Restrictive firewalling should be applied.

Detailsinfo

A vulnerability was found in TENGCONTROL T-920 PLC 5.5 and classified as problematic. Affected by this issue is some unknown functionality of the component Service Port 502. The manipulation with the input value \x19\xb2\x00\x00\x00\x06\x43\x01\x00\xac\xff\x00 leads to a input validation vulnerability (Persistent). Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

An issue was discovered on TENGCONTROL T-920 PLC v5.5 devices. It allows remote attackers to cause a denial of service (persistent failure mode) by sending a series of \x19\xb2\x00\x00\x00\x06\x43\x01\x00\xac\xff\x00 (aka UID 0x43) requests to TCP port 502.

The bug was discovered 03/08/2019. The weakness was presented 03/06/2019. This vulnerability is handled as CVE-2019-9590 since 03/06/2019. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

Addressing this vulnerability is possible by firewalling tcp/502.

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Productinfo

Vendor

TENGCONTROL

Name

T-920 PLC

Version

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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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

Name: Persistent
Class: Input validation / Persistent
CWE: CWE-20
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: Firewall
Status: 🔍

0-Day Time: 🔍

Firewalling: 🔍

Timelineinfo

03/06/2019 🔍
03/06/2019 +0 days 🔍
03/06/2019 +0 days 🔍
03/08/2019 +2 days 🔍
07/26/2023 +1601 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2019-9590 (🔍)
GCVE (CVE): GCVE-0-2019-9590
GCVE (VulDB): GCVE-100-131378

Entryinfo

Created: 03/06/2019 19:59
Updated: 07/26/2023 18:41
Changes: 03/06/2019 19:59 (57), 05/14/2020 09:28 (1), 07/26/2023 18:41 (4)
Complete: 🔍
Cache ID: 216::103