CVE-2017-2254 in Garoon
Summary
by MITRE
Cybozu Garoon 3.5.0 to 4.2.5 allows an attacker to cause a denial of service in the application menu's edit function via specially crafted input
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 11/11/2019
The vulnerability identified as CVE-2017-2254 affects Cybozu Garoon versions 3.5.0 through 4.2.5, representing a critical denial of service flaw within the application menu's edit functionality. This vulnerability stems from insufficient input validation mechanisms that fail to properly sanitize user-provided data before processing within the edit function. The flaw manifests when attackers submit specially crafted input sequences that exploit weaknesses in the input handling routines, causing the application to crash or become unresponsive during menu editing operations.
The technical nature of this vulnerability aligns with CWE-129, which addresses issues related to insufficient validation of input boundaries, and CWE-400, which covers unspecified denial of service conditions. The attack vector specifically targets the application menu editing component where user inputs are processed without adequate sanitization or bounds checking. When malicious input reaches the vulnerable code path, it triggers unexpected behavior in the application's memory management or execution flow, leading to service interruption. The vulnerability does not appear to enable arbitrary code execution or data leakage, but rather focuses on disrupting the availability of the application service.
From an operational perspective, this vulnerability poses significant risks to organizations relying on Cybozu Garoon for collaborative workflows and document management. The denial of service condition can prevent authorized users from accessing or modifying application menus, effectively disrupting business operations and productivity. Attackers can exploit this weakness to repeatedly crash the application menu editing functionality, forcing administrators to restart services or potentially impacting broader organizational workflows that depend on the application's availability. The impact extends beyond simple service interruption as it can affect user confidence in the application and potentially create opportunities for more sophisticated attacks if the system becomes unstable.
Organizations should implement immediate mitigations including applying the vendor-provided patches or updates that address the input validation deficiencies in the menu editing component. Network segmentation and access controls should be enforced to limit exposure of the vulnerable application to untrusted users. Additionally, implementing monitoring solutions that can detect unusual patterns in menu editing operations may help identify exploitation attempts. The mitigation strategy should also include regular security assessments of the application to identify similar input validation vulnerabilities. Organizations should consider implementing web application firewalls or intrusion prevention systems that can filter malicious input patterns targeting the vulnerable functionality. Compliance with industry standards such as those outlined in the OWASP Top Ten and NIST cybersecurity frameworks should guide the implementation of these protective measures. The vulnerability demonstrates the critical importance of input validation in preventing denial of service conditions and maintaining application availability.