Multiple vulnerabilities in Moxa IKS and EDS industrial switches

1) Buffer overflow

EUVDB-ID: #VU17862

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6557

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error. A remote attacker can send a specially crafted request to the affected system, trigger buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Request updates from vendor's technical support.

Vulnerable software versions

Moxa IKS-G6824A: 4.5

External links

http://ics-cert.us-cert.gov/advisories/ICSA-19-057-01
http://www.moxa.com/en/support/product-support/security-advisory/eds-405a-series-eds-408a-series-ed...

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

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) Cross-site request forgery

EUVDB-ID: #VU17863

Risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6561

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Mitigation

Request updates from vendor's technical support.

Vulnerable software versions

Moxa IKS-G6824A: 4.5

External links

http://ics-cert.us-cert.gov/advisories/ICSA-19-057-01
http://www.moxa.com/en/support/product-support/security-advisory/eds-405a-series-eds-408a-series-ed...

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) Cross-site scripting

EUVDB-ID: #VU17864

Risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6565

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Request updates from vendor's technical support.

Vulnerable software versions

Moxa IKS-G6824A: 4.5

External links

http://ics-cert.us-cert.gov/advisories/ICSA-19-057-01
http://www.moxa.com/en/support/product-support/security-advisory/eds-405a-series-eds-408a-series-ed...

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.

4) Improper access control

EUVDB-ID: #VU17865

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6520

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

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

The vulnerability exists due to improper access restrictions in web interface. A remote attacker can gain unauthorized access to sensitive information.

Mitigation

Request updates from vendor's technical support.

Vulnerable software versions

Moxa IKS-G6824A: 4.5

External links

http://ics-cert.us-cert.gov/advisories/ICSA-19-057-01
http://www.moxa.com/en/support/product-support/security-advisory/eds-405a-series-eds-408a-series-ed...

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

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.

5) Improper control of interaction frequency

EUVDB-ID: #VU17866

Risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6524

CWE-ID: CWE-799 - Improper Control of Interaction Frequency

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform brute-force attack.

The vulnerability exists due to the application does not implement sufficient measures to prevent multiple failed authentication attempts, which makes the switches susceptible to brute force attacks.

Mitigation

Request updates from vendor's technical support.

Vulnerable software versions

Moxa EDS-510A: 2.6 - 3.8

Moxa EDS-408A: 2.6 - 3.8

Moxa EDS-405A: 2.6 - 3.8

External links

http://ics-cert.us-cert.gov/advisories/ICSA-19-057-01
http://www.moxa.com/en/support/product-support/security-advisory/eds-405a-series-eds-408a-series-ed...

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

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.

6) Cleartext transmission of sensitive information

EUVDB-ID: #VU17867

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6526

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain sensitive information.

The vulnerability exists due to Moxa EDS industrial switches use proprietary protocols that cannot be disabled. A remote attacker with ability to perform MitM attack can recover an administrator's password from the unlock function.

Mitigation

Request updates from vendor's technical support.

Vulnerable software versions

Moxa EDS-510A: 2.6 - 3.8

Moxa EDS-408A: 2.6 - 3.8

Moxa EDS-405A: 2.6 - 3.8

External links

http://ics-cert.us-cert.gov/advisories/ICSA-19-057-01
http://www.moxa.com/en/support/product-support/security-advisory/eds-405a-series-eds-408a-series-ed...

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

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.

7) Out-of-bounds read

EUVDB-ID: #VU17868

Risk: Medium

CVSSv3.1: 5 [CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6522

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition. A remote attacker can send a specially crafted request to the device, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Request updates from vendor's technical support.

Vulnerable software versions

Moxa IKS-G6824A: 4.5

External links

http://ics-cert.us-cert.gov/advisories/ICSA-19-057-01
http://www.moxa.com/en/support/product-support/security-advisory/eds-405a-series-eds-408a-series-ed...

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

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.

8) Unprotected storage of credentials

EUVDB-ID: #VU17869

Risk: Medium

CVSSv3.1: 5 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6518

CWE-ID: CWE-256 - Unprotected Storage of Credentials

Exploit availability: No

Description

The vulnerability allows a remote authenticated user to gain access to sensitive information.

The vulnerability exists due to credentials on device are stored in an insecure manner. A remote authenticated user via web interface can gain access to other users' credentials.

Mitigation

Request updates from vendor's technical support.

Vulnerable software versions

Moxa EDS-510A: 2.6 - 3.8

Moxa EDS-408A: 2.6 - 3.8

Moxa EDS-405A: 2.6 - 3.8

External links

http://ics-cert.us-cert.gov/advisories/ICSA-19-057-01
http://www.moxa.com/en/support/product-support/security-advisory/eds-405a-series-eds-408a-series-ed...

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

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.

9) Improper Authentication

EUVDB-ID: #VU17870

Risk: Medium

CVSSv3.1: 6.9 [CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6563

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to authentication cookie is based on MD5 hash of the password. A remote attacker with ability to perform MitM attack can obtain the cookie and recover administrator's password.

Mitigation

Request updates from vendor's technical support.

Vulnerable software versions

Moxa EDS-510A: 2.6 - 3.8

Moxa EDS-408A: 2.6 - 3.8

Moxa EDS-405A: 2.6 - 3.8

External links

http://ics-cert.us-cert.gov/advisories/ICSA-19-057-01
http://www.moxa.com/en/support/product-support/security-advisory/eds-405a-series-eds-408a-series-ed...

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

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.

10) Input validation error

EUVDB-ID: #VU17871

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6559

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to input validation error when processing network packets. A remote attacker can send a specially crafted network packet and perform a denial of service (DoS) attack.

Mitigation

Request updates from vendor's technical support.

Vulnerable software versions

Moxa EDS-510A: 2.6 - 3.8

Moxa EDS-408A: 2.6 - 3.8

Moxa EDS-405A: 2.6 - 3.8

External links

http://ics-cert.us-cert.gov/advisories/ICSA-19-057-01
http://www.moxa.com/en/support/product-support/security-advisory/eds-405a-series-eds-408a-series-ed...

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

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.

11) Stack overflow

EUVDB-ID: #VU17872

Risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

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

The vulnerability exists due to a buffer overflow when processing “User” cookie, sent to the web interface. A remote attacker can send a specially crafted HTTP request and reboot the affected device.

Mitigation

Request updates from vendor's technical support.

Vulnerable software versions

Moxa IKS-G6824A: 4.5

External links

http://www.moxa.com/en/support/product-support/security-advisory/eds-405a-series-eds-408a-series-ed...

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

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.

12) Improper input validation

EUVDB-ID: #VU17873

Risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation when processing OSPF Hello packets. A remote attacker can send a specially crafted OSPF packet to the affected device and trigger device reload.

Mitigation

Request updates from vendor's technical support.

Vulnerable software versions

Moxa IKS-G6824A: 4.5

External links

http://www.moxa.com/en/support/product-support/security-advisory/eds-405a-series-eds-408a-series-ed...

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

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.

Risk	Medium
Patch available	YES
Number of vulnerabilities	12
CVE-ID	CVE-2019-6557 CVE-2019-6561 CVE-2019-6565 CVE-2019-6520 CVE-2019-6524 CVE-2019-6526 CVE-2019-6522 CVE-2019-6518 CVE-2019-6563 CVE-2019-6559
CWE-ID	CWE-120 CWE-352 CWE-79 CWE-284 CWE-799 CWE-319 CWE-125 CWE-256 CWE-287 CWE-20 CWE-121
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Moxa IKS-G6824A Server applications / SCADA systems Moxa EDS-510A Server applications / SCADA systems Moxa EDS-408A Server applications / SCADA systems Moxa EDS-405A Server applications / SCADA systems
Vendor	Moxa