CVE-2018-20393 : Security Advisory and Response

Remote attackers can uncover credentials on devices such as Technicolor CGA0111, CWA0101, DPC3928SL, TC7110.AR, TC7110.B, TC7110.D, TC7200.d1I, and TC7200.TH2v2 by utilizing SNMP requests.

Understanding CVE-2018-20393

This CVE involves the exposure of credentials on various Technicolor devices through specific SNMP requests.

What is CVE-2018-20393?

CVE-2018-20393 allows remote attackers to discover credentials on specific Technicolor devices by sending SNMP requests.

The Impact of CVE-2018-20393

The vulnerability enables unauthorized access to sensitive information, potentially leading to security breaches and unauthorized system control.

Technical Details of CVE-2018-20393

This section provides detailed technical information about the vulnerability.

Vulnerability Description

Remote attackers can exploit SNMP requests to reveal credentials on vulnerable Technicolor devices.

Affected Systems and Versions

Technicolor CGA0111 CGA0111E-ES-13-E23E-c8000r5712-170217-0829-TRU
CWA0101 CWA0101E-A23E-c7000r5712-170315-SKC
DPC3928SL D3928SL-PSIP-13-A010-c3420r55105-170214a
TC7110.AR STD3.38.03
TC7110.B STC8.62.02
TC7110.D STDB.79.02
TC7200.d1I TC7200.d1IE-N23E-c7000r5712-170406-HAT
TC7200.TH2v2 SC05.00.22

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 uncover credentials on the affected devices.

Mitigation and Prevention

Protect your systems from CVE-2018-20393 by following these security measures.

Immediate Steps to Take

Disable SNMP if not required for device functionality.
Implement strong firewall rules to restrict SNMP access.
Regularly monitor SNMP activity for suspicious behavior.

Long-Term Security Practices

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

Patching and Updates

Apply patches provided by Technicolor to address the SNMP credential exposure vulnerability.