CVE-2018-0529 in Office
Summary
by MITRE
Cybozu Office 10.0.0 to 10.7.0 allows remote attackers to cause a denial of service via unspecified vectors.
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Analysis
by VulDB Data Team • 02/21/2020
The vulnerability identified as CVE-2018-0529 affects Cybozu Office versions 10.0.0 through 10.7.0, representing a significant security flaw that enables remote attackers to execute denial of service attacks against affected systems. This issue resides within the application's handling of certain input parameters or network communications, though the specific technical vectors remain unspecified in the initial description. The vulnerability demonstrates the classic characteristics of a denial of service weakness that can be exploited over a network without requiring authentication or privileged access, making it particularly dangerous in enterprise environments where such applications are widely deployed.
The technical implementation of this vulnerability likely involves improper input validation or resource management within the Cybozu Office application framework. Attackers can potentially craft malicious payloads or exploit specific application functions that trigger abnormal program behavior, leading to service disruption or complete system unavailability. Such flaws typically stem from inadequate error handling mechanisms, buffer overflow conditions, or resource exhaustion scenarios that cause the application to crash or become unresponsive. The unspecified nature of the attack vectors suggests that multiple pathways exist for exploitation, potentially including malformed network requests, unexpected data inputs, or specific protocol interactions that the application fails to properly handle.
From an operational impact perspective, this vulnerability creates substantial risk for organizations relying on Cybozu Office for business processes and document management. A successful denial of service attack can result in immediate business disruption, loss of productivity, and potential financial impact due to system downtime. The vulnerability affects a range of versions, indicating it may have been present for an extended period, giving attackers ample opportunity to develop and refine exploitation techniques. Organizations using affected versions face the risk of unauthorized service interruption, which could be particularly damaging in mission-critical environments where continuous availability is essential for business operations.
The vulnerability aligns with CWE-119, which addresses improper restriction of operations within a restricted environment, and may also relate to CWE-400, concerning resource exhaustion attacks that can lead to denial of service conditions. From an adversarial perspective, this weakness fits within the ATT&CK framework under the technique of service stoppage or resource exhaustion, where adversaries target application availability as a primary attack vector. Organizations should consider implementing network segmentation, firewall rules to restrict access to affected services, and monitoring solutions to detect anomalous traffic patterns that may indicate exploitation attempts. The remediation approach requires immediate deployment of patches provided by Cybozu, as well as comprehensive testing to ensure that the update does not introduce compatibility issues with existing workflows or integrated systems. Additionally, organizations should conduct vulnerability assessments to identify any other potentially affected applications or systems that may share similar architectural weaknesses and implement layered security controls to mitigate the overall risk exposure.