SB2020022608 - Multiple vulnerabilities in Moxa EDS-G516E and EDS-510E Series Ethernet Switches

Description

This security bulletin contains information about 7 vulnerabilities.

1) Stack-based buffer overflow (CVE-ID: CVE-2020-7007)

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

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

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

The vulnerability exists due to a boundary error in the web setting page IEEE802.1x setting page. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code or cause a denial of service (DoS) condition on the target system.

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

2) Use of a broken or risky cryptographic algorithm (CVE-ID: CVE-2020-7001)

CWE-ID: CWE-327 - Use of a Broken or Risky Cryptographic Algorithm

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

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

The vulnerability exists due to the affected products use a weak cryptographic algorithm. A remote attacker can gain unauthorized access to sensitive information on the system.

3) Use of Hard-coded Cryptographic Key (CVE-ID: CVE-2020-6979)

CWE-ID: CWE-321 - Use of Hard-coded Cryptographic Key

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

4) Use of hard-coded credentials (CVE-ID: CVE-2020-6981)

CWE-ID: CWE-798 - Use of Hard-coded Credentials

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote attacker to gain full access to vulnerable system.

The vulnerability exists due to presence of hard-coded credentials in application code. A remote unauthenticated attacker can access the affected system using the hard-coded credentials.

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

5) Cleartext transmission of sensitive information (CVE-ID: CVE-2020-6997)

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

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

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

The vulnerability exists due to software uses insecure communication channel to transmit sensitive information. A remote user with ability to intercept network traffic can gain access to sensitive data.

6) Weak password requirements (CVE-ID: CVE-2020-6991)

CWE-ID: CWE-521 - Weak Password Requirements

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows an attacker to perform brute-force attack and guess the password.

The vulnerability exists due to weak password requirements. An attacker can perform a brute-force attack and guess users' passwords.

7) Buffer overflow (CVE-ID: CVE-2020-6989)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

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

The vulnerability exists due to some of the parameters in the setting pages do not ensure text is the correct size for its buffer. A remote authenticated attacker can trigger memory corruption and cause a denial of service condition on the target system.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• https://ics-cert.us-cert.gov/advisories/icsa-20-056-04
• https://www.moxa.com/en/support/support/security-advisory/eds-g516e-510e-ethernet-switches-vulnerabilities
• https://www.moxa.com/en/support/support/security-advisory/eds-g516e-510e-ethernet-switches-vulnerabi...
• https://www.us-cert.gov/ics/advisories/icsa-20-056-04