CVE-2018-5353
CriticalCVSS 9.8Exploitation Probability (EPSS)
Very high risk95th percentile - higher than 95% of all known CVEs
Summary
The custom GINA/CP module in Zoho ManageEngine ADSelfService Plus before version 5.5 build 5517 allows remote attackers to execute code and escalate privileges via spoofing. It does not authenticate the intended server before opening a browser window, enabling an unauthenticated attacker to redirect the browser and gain execution in the context of the WinLogon.exe process.
Risk Assessment
The risk for the organization includes potential full compromise of a workstation or server by a remote attacker, leading to data theft, malware installation, or lateral movement within the network.
Recommendation
Immediately update Zoho ManageEngine ADSelfService Plus to version 5.5 build 5517 or later. Additionally, enforce Network Level Authentication (NLA) for RDP connections and ensure proper web server certificate configuration.
Original NVD description (English source)
The custom GINA/CP module in Zoho ManageEngine ADSelfService Plus before 5.5 build 5517 allows remote attackers to execute code and escalate privileges via spoofing. It does not authenticate the intended server before opening a browser window. An unauthenticated attacker capable of conducting a spoofing attack can redirect the browser to gain execution in the context of the WinLogon.exe process. If Network Level Authentication is not enforced, the vulnerability can be exploited via RDP. Additionally, if the web server has a misconfigured certificate then no spoofing attack is required