CVE-2022-23779 in Desktop Central
Summary
by MITRE • 03/02/2022
Zoho ManageEngine Desktop Central before 10.1.2137.8 exposes the installed server name to anyone. The internal hostname can be discovered by reading HTTP redirect responses.
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Analysis
by VulDB Data Team • 03/04/2022
The vulnerability identified as CVE-2022-23779 affects Zoho ManageEngine Desktop Central versions prior to 10.1.2137.8, representing a significant information disclosure weakness that exposes internal server naming conventions to unauthorized parties. This flaw resides in the application's handling of HTTP redirect responses, where the internal hostname becomes inadvertently accessible through routine network traffic analysis. The vulnerability demonstrates a clear failure in proper access control and information hiding mechanisms that should prevent internal system details from being exposed to external entities. According to CWE-200, this represents an information exposure vulnerability where sensitive system information is disclosed to unauthorized actors, potentially enabling further reconnaissance activities.
The technical implementation of this vulnerability stems from the application's redirect mechanisms not properly sanitizing or masking internal server identifiers during HTTP response handling. When users or automated tools interact with the Desktop Central application, the redirect responses contain the internal hostname in their location headers, creating a direct pathway for attackers to discover the server name. This behavior violates fundamental security principles of least privilege and defense in depth, as internal infrastructure details should remain hidden from external network entities. The flaw operates at the network protocol level where HTTP redirects are processed, making it particularly concerning as it requires no special privileges or complex attack vectors to exploit.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with critical reconnaissance data that can inform subsequent attack phases. Knowledge of the internal hostname enables threat actors to conduct more targeted attacks, potentially leveraging the discovered information for service enumeration, vulnerability assessment, or social engineering campaigns. This exposure creates opportunities for attackers to map internal network structures and identify potential attack surfaces that would otherwise remain hidden. From an attacker's perspective, this information can be used to craft more sophisticated attacks against the internal infrastructure, potentially leading to privilege escalation or lateral movement within the network environment. The vulnerability aligns with ATT&CK technique T1082, which involves discovering information about the system, and T1592, which focuses on reconnaissance through information gathering activities.
Organizations utilizing affected versions of Zoho ManageEngine Desktop Central face significant risks from this exposure, particularly in environments where internal network architecture should remain confidential. The vulnerability creates a persistent threat surface that remains active as long as the affected software version is deployed, making it essential for security teams to implement immediate remediation measures. The exposure of internal hostnames can facilitate more advanced attacks, including those targeting specific services running on the discovered hosts or leveraging the information for credential harvesting attacks. Security professionals should consider this vulnerability as part of broader network reconnaissance efforts and implement proper network segmentation to limit the potential impact of such information exposure. The fix implemented in version 10.1.2137.8 addresses the root cause by ensuring that HTTP redirect responses properly sanitize internal server identifiers, preventing the leakage of sensitive naming information that could otherwise be exploited by malicious actors.