CVE-2018-20383 : Security Advisory and Response

Remote attackers can exploit a vulnerability in the ARRIS DG950A 7.10.145 and DG950S 7.10.145.EURO devices to obtain credentials through SNMP requests.

Understanding CVE-2018-20383

This CVE entry describes a security vulnerability in specific ARRIS DG950A and DG950S devices that could allow unauthorized access to credentials.

What is CVE-2018-20383?

The vulnerability in the ARRIS DG950A 7.10.145 and DG950S 7.10.145.EURO devices enables remote attackers to retrieve credentials using specific SNMP requests.

The Impact of CVE-2018-20383

Attackers can potentially gain unauthorized access to sensitive information on affected devices.
This vulnerability could lead to unauthorized system control and compromise of user data.

Technical Details of CVE-2018-20383

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows attackers to extract credentials from the affected ARRIS devices through SNMP requests.

Affected Systems and Versions

ARRIS DG950A 7.10.145
ARRIS DG950S 7.10.145.EURO

Exploitation Mechanism

Attackers exploit the vulnerability by sending specific SNMP requests (iso.3.6.1.4.1.4491.2.4.1.1.6.1.1.0 and iso.3.6.1.4.1.4491.2.4.1.1.6.1.2.0) to the devices to retrieve credentials.

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable SNMP if not essential for device operation.
Implement strong firewall rules to restrict SNMP access.
Regularly monitor SNMP traffic for any suspicious activity.

Long-Term Security Practices

Keep devices up to date with the latest firmware and security patches.
Conduct regular security audits and penetration testing to identify vulnerabilities.

Patching and Updates

Apply patches provided by the vendor to address the SNMP credential leak vulnerability.