CVE-2015-0784 in ZENworks Configuration Management
Summary
by MITRE
Rtrlet.class in Novell ZENworks Configuration Management (ZCM) allows remote attackers to obtain Session IDs of logged in users via a value of ShowLogins for the maintenance variable.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 01/08/2021
The vulnerability identified as CVE-2015-0784 resides within the Novell ZENworks Configuration Management (ZCM) platform, specifically in the Rtrlet.class component that handles maintenance operations. This flaw represents a critical information disclosure vulnerability that enables remote attackers to extract session identifiers from authenticated user sessions without requiring valid credentials or authentication. The vulnerability manifests through a specific parameter manipulation technique where an attacker can submit a maintenance variable with the value ShowLogins to the Rtrlet.class endpoint, thereby exposing active session information that should remain protected within the system's security boundaries.
The technical implementation of this vulnerability stems from insufficient input validation and improper access control mechanisms within the ZCM maintenance functionality. When the system processes the ShowLogins parameter, it fails to properly authenticate or authorize the requestor before returning session information, creating an unintended information leak channel. This behavior violates fundamental security principles of least privilege and proper access controls, allowing unauthorized parties to obtain sensitive session identifiers that could subsequently be used for session hijacking attacks or other malicious activities. The vulnerability operates at the application layer and requires no special privileges to exploit, making it particularly dangerous as it can be leveraged by any remote attacker with network access to the affected system.
The operational impact of CVE-2015-0784 extends beyond simple information disclosure, as session ID exposure creates a gateway for more sophisticated attacks within the compromised environment. Once an attacker obtains valid session identifiers, they can potentially impersonate legitimate users and access restricted system functionality, modify configurations, or escalate privileges within the ZENworks environment. This vulnerability directly impacts the confidentiality and integrity of the system's authentication mechanisms, undermining the trust model that ZENworks relies upon for secure remote management operations. Organizations using ZENworks Configuration Management are particularly vulnerable since the system typically manages critical infrastructure components, making session hijacking attacks potentially devastating to operational security and business continuity.
Mitigation strategies for this vulnerability should prioritize immediate patching of affected ZENworks installations through official vendor updates and security advisories. Organizations should implement network segmentation to limit access to ZENworks management interfaces and consider deploying additional authentication layers or API gateways to filter and validate maintenance requests. The vulnerability aligns with CWE-200 (Information Disclosure) and represents a specific instance of improper access control as outlined in the ATT&CK framework under the T1078 technique for Valid Accounts. Security teams should also implement monitoring for unusual maintenance parameter usage patterns and establish regular security assessments of remote management interfaces to identify similar vulnerabilities in other enterprise management platforms. Additionally, organizations should review and strengthen their access control policies to ensure that only authorized administrative personnel can perform maintenance operations that might expose session information.