CVE-2018-11155

Vulnerability

Quest DR Series Disk Backup software versions prior to 4.0.3.1 are affected by a command injection vulnerability (issue 13 of 46). The vulnerability resides in the management interface and allows injection of system commands through crafted input. No specific parameter or function is named in the available references, but the software's web-based administration panel is likely the attack surface [1].

Exploitation

An attacker with valid credentials to the Quest DR Series management interface can exploit the command injection flaw by sending specially crafted requests that include operating system commands. No user interaction beyond authentication is required, and the attack can be carried out over the network. The exact request structure is not detailed in the public advisories, but the vulnerability is classified as command injection [1].

Impact

Successful exploitation allows an authenticated attacker to execute arbitrary commands on the underlying operating system with the privileges of the application (likely root or system level). This can lead to full compromise of the backup appliance, including data exfiltration, modification, or destruction, as well as potential lateral movement within the network [1].

Mitigation

Quest has released version 4.0.3.1 to address this vulnerability. Users should upgrade to this version or later immediately. No workarounds are documented. The CVE is part of a larger set of 46 vulnerabilities disclosed for Quest DR Series; all should be addressed by the same update [1].