Multiple vulnerabilities in IDEC Programmable Logic Controllers



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2024-28957
CVE-2024-41927
CWE-ID CWE-340
CWE-319
Exploitation vector Network
Public exploit N/A
Vulnerable software
 FC6B Series MICROSmart Plus CPU module
Hardware solutions / Firmware

FC6A Series MICROSmart Plus CPU module
Hardware solutions / Firmware

FC6B Series MICROSmart All-in-One CPU module
Hardware solutions / Firmware

FC6A Series MICROSmart All-in-One CPU module
Hardware solutions / Firmware

FT1A Series SmartAXIS Pro/Lite
Hardware solutions / Firmware

Vendor IDEC Corporation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Generation of Predictable Numbers or Identifiers

EUVDB-ID: #VU88179

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-28957

CWE-ID: CWE-340 - Generation of Predictable Numbers or Identifiers

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to generation of predictable numbers or identifiers. A remote attacker can predict some packet header IDs of the device and interfere communications.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FC6B Series MICROSmart Plus CPU module: 2.60

FC6A Series MICROSmart Plus CPU module: 2.40

FC6B Series MICROSmart All-in-One CPU module: 2.60

FC6A Series MICROSmart All-in-One CPU module: 2.60

CPE2.3 External links

http://jvn.jp/en/vu/JVNVU96959731/index.html
http://us.idec.com/media/24-RD-0256-EN.pdf


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.

2) Cleartext transmission of sensitive information

EUVDB-ID: #VU96629

Risk: Low

CVSSv3.1: 4 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-41927

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

Exploit availability: No

Description

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

The vulnerability exists due to software uses insecure communication channel to transmit sensitive information. An attacker with physical access can gain access to sensitive data.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FT1A Series SmartAXIS Pro/Lite: 2.41

FC6B Series MICROSmart Plus CPU module: 2.60

FC6A Series MICROSmart Plus CPU module: 2.40

FC6B Series MICROSmart All-in-One CPU module: 2.60

FC6A Series MICROSmart All-in-One CPU module: 2.60

CPE2.3 External links

http://jvn.jp/en/vu/JVNVU96959731/index.html
http://us.idec.com/media/24-RD-0256-EN.pdf


Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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