Show vulnerabilities with patch / with exploit

Improper access control in Schneider Electric Tricon Communication Module



Published: 2020-07-24
Severity High
Patch available YES
Number of vulnerabilities 5
CVE ID CVE-2020-7483
CVE-2020-7484
CVE-2020-7485
CVE-2020-7486
CVE-2020-7491
CWE ID CWE-319
CWE-400
CWE-912
CWE-284
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
Triconex TriStation 1131
Server applications / SCADA systems

Tricon Communications Module (TCM) Models 4351
Hardware solutions / Other hardware appliances

Tricon Communications Module (TCM) Models 4352
Hardware solutions / Other hardware appliances

Tricon Communications Module (TCM) Models 4351A/B
Hardware solutions / Other hardware appliances

Tricon Communications Module (TCM) Models 4352A/B
Hardware solutions / Other hardware appliances

Vendor Schneider Electric

Security Advisory

1) Cleartext transmission of sensitive information

Severity: Low

CVSSv3: 2.7 [CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-7483

CWE-ID: CWE-319 - Cleartext Transmission of Sensitive Information

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists within the "password" feature due to software uses insecure communication channel to transmit sensitive information. A remote attacker with ability to intercept network traffic can gain access to sensitive data.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Triconex TriStation 1131: -, 4.12.0

CPE External links

https://www.se.com/ww/en/download/document/SESB-2020-105-01

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Resource exhaustion

Severity: Medium

CVSSv3: 6.5 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-7484

CWE-ID: CWE-400 - Uncontrolled Resource Consumption ('Resource Exhaustion')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources, related to the "password" feature. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Triconex TriStation 1131: -, 4.12.0

CPE External links

https://www.se.com/ww/en/download/document/SESB-2020-105-01

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Hidden functionality

Severity: Low

CVSSv3: 4.8 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-7485

CWE-ID: CWE-912 - Hidden Functionality (Backdoor)

Exploit availability: No

Description

The vulnerability allows a local user to compromise vulnerable system

The vulnerability exists due to hidden functionality (backdoor) is present in software, related to a legacy support account. A local user can use this functionality to inappropriate access to the TriStation 1131 project file.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Triconex TriStation 1131: -, 4.9.0, 4.10.0

CPE External links

https://www.se.com/ww/en/download/document/SESB-2020-105-01

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Resource exhaustion

Severity: Medium

CVSSv3: 6.5 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-7486

CWE-ID: CWE-400 - Uncontrolled Resource Consumption ('Resource Exhaustion')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Tricon Communications Module (TCM) Models 4351: -, 10.0.0

Tricon Communications Module (TCM) Models 4352: -, 10.0.0

Tricon Communications Module (TCM) Models 4351A/B: -, 10.0.0

Tricon Communications Module (TCM) Models 4352A/B: -, 10.0.0

CPE External links

https://www.se.com/ww/en/download/document/SESB-2020-105-01

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Improper access control

Severity: High

CVSSv3: 8.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-7491

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in a legacy debug port account. A remote attacker can bypass implemented security restrictions and gain unauthorized access to the application.

Note: This vulnerability affects the following versions:

  • 10.2.0 through 10.5.3

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Tricon Communications Module (TCM) Models 4351: -, 10.5.3

Tricon Communications Module (TCM) Models 4352: -, 10.5.3

Tricon Communications Module (TCM) Models 4351A/B: -, 10.5.3

Tricon Communications Module (TCM) Models 4352A/B: -, 10.5.3

CPE External links

https://www.se.com/ww/en/download/document/SESB-2020-105-01/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.