CVE-2018-20387 : Vulnerability Insights and Analysis

Remote attackers can use SNMP requests to uncover credentials on Bnmux BCW700J, BCW710J, and BCW710J2 devices.

Understanding CVE-2018-20387

This CVE involves the exposure of credentials through specific SNMP requests on certain Bnmux devices.

What is CVE-2018-20387?

CVE-2018-20387 allows remote attackers to discover credentials on Bnmux BCW700J version 5.20.7, BCW710J version 5.30.6a, and BCW710J2 version 5.30.16 devices using 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 SNMP requests.

The Impact of CVE-2018-20387

This vulnerability can lead to unauthorized access to sensitive information, potentially compromising the security and confidentiality of the affected devices.

Technical Details of CVE-2018-20387

CVE-2018-20387 involves specific details regarding the vulnerability and affected systems.

Vulnerability Description

The vulnerability allows attackers to extract credentials from Bnmux BCW700J, BCW710J, and BCW710J2 devices through SNMP requests.

Affected Systems and Versions

Bnmux BCW700J version 5.20.7
Bnmux BCW710J version 5.30.6a
Bnmux BCW710J2 version 5.30.16

Exploitation Mechanism

Attackers exploit 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 SNMP requests to retrieve credentials from the vulnerable devices.

Mitigation and Prevention

Protecting against CVE-2018-20387 requires immediate actions and long-term security measures.

Immediate Steps to Take

Disable SNMP if not essential for device operation
Implement firewall rules to restrict SNMP access
Regularly monitor SNMP activity for suspicious behavior

Long-Term Security Practices

Conduct regular security assessments and audits
Keep devices and software up to date with the latest patches
Educate users on secure SNMP configuration and best practices

Patching and Updates

Apply patches provided by Bnmux to address the SNMP credential exposure vulnerability