CVE-2018-11543 : Security Advisory and Response

A Local File Inclusion (LFI) vulnerability in the Sonus SBC 1000 / SBC 2000 / SBC SWe Lite web interface allows for the downloading of arbitrary files via an unspecified vector. It affects the 1000 and 2000 devices 6.0.x up to Build 446, 6.1.x up to Build 492, and 7.0.x up to Build 485. It affects the SWe Lite devices 6.1.x up to Build 111 and 7.0.x up to Build 140.

Understanding CVE-2018-11543

The web interface of the Sonus SBC 1000 / SBC 2000 / SBC SWe Lite contains a vulnerability known as Local File Inclusion (LFI) that enables attackers to download any files they desire through an unspecified method.

What is CVE-2018-11543?

The CVE-2018-11543 vulnerability is a Local File Inclusion (LFI) issue in the Sonus SBC 1000, SBC 2000, and SBC SWe Lite web interfaces, allowing unauthorized downloading of files.

The Impact of CVE-2018-11543

Attackers can exploit this vulnerability to download arbitrary files from the affected devices.
Devices impacted include Sonus SBC 1000, SBC 2000, and SBC SWe Lite with specific versions.

Technical Details of CVE-2018-11543

The technical details of the CVE-2018-11543 vulnerability are as follows:

Vulnerability Description

The vulnerability allows attackers to perform Local File Inclusion (LFI) attacks, leading to unauthorized file downloads.

Affected Systems and Versions

The following devices and versions are affected:

Sonus SBC 1000 and SBC 2000 devices with versions 6.0.x to Build 446, 6.1.x to Build 492, and 7.0.x to Build 485.
SBC SWe Lite devices with versions 6.1.x to Build 111 and 7.0.x to Build 140.

Exploitation Mechanism

Attackers can exploit this vulnerability through an unspecified method to download files from the affected devices.

Mitigation and Prevention

To address CVE-2018-11543, consider the following mitigation strategies:

Immediate Steps to Take

Apply vendor-supplied patches or updates to fix the LFI vulnerability.
Monitor network traffic for any suspicious activities that could indicate exploitation.

Long-Term Security Practices

Regularly update and patch all software and firmware to prevent known vulnerabilities.
Implement network segmentation and access controls to limit unauthorized access to sensitive systems.

Patching and Updates

Stay informed about security advisories from the vendor and apply patches promptly to secure the devices.