CVE-2020-5586 in Garoon
Summary
by MITRE
Cross-site scripting vulnerability in Cybozu Garoon 4.10.3 to 5.0.1 allows attacker with administrator rights to inject an arbitrary script via unspecified vectors.
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Analysis
by VulDB Data Team • 06/30/2020
The vulnerability identified as CVE-2020-5586 represents a critical cross-site scripting flaw within Cybozu Garoon software versions ranging from 4.10.3 through 5.0.1. This vulnerability specifically targets the web application interface of the collaboration platform, which is widely used for enterprise workflow management and document sharing. The flaw exists in the way the application processes user input, creating an avenue for malicious code execution that could compromise the security posture of organizations relying on this platform.
The technical nature of this vulnerability stems from insufficient input validation and output encoding mechanisms within the Garoon application. Attackers with administrator privileges can leverage this weakness to inject malicious scripts into the application's response handling. These scripts can then execute in the context of other users' browsers, potentially allowing for session hijacking, data theft, or further exploitation of the compromised systems. The vulnerability operates at the application layer and specifically affects the web interface components that process user-generated content, making it particularly dangerous in enterprise environments where administrators have elevated privileges.
From an operational impact perspective, this vulnerability poses significant risks to organizations using Cybozu Garoon as their primary collaboration platform. The requirement for administrator privileges to exploit the vulnerability means that attackers must first compromise administrative accounts or gain unauthorized access to systems with elevated permissions. However, once achieved, the impact can be severe as the injected scripts can target all users within the system, potentially leading to widespread data breaches, unauthorized access to sensitive information, and complete compromise of the collaboration environment. The vulnerability affects the core functionality of the platform, undermining trust in the system's security controls.
The security implications extend beyond immediate exploitation as this vulnerability could serve as a foothold for more extensive attacks within the network. Attackers could use the XSS capability to steal session cookies, redirect users to malicious sites, or perform actions on behalf of legitimate users. This vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws in web applications. From an adversarial perspective, this vulnerability would likely be categorized under attack techniques related to web application exploitation and credential theft within the MITRE ATT&CK framework. Organizations should consider implementing comprehensive input sanitization measures, regular security assessments, and monitoring for anomalous user behavior to detect potential exploitation attempts.
Mitigation strategies should include immediate patching of affected versions to the latest available releases from Cybozu, implementing robust input validation and output encoding mechanisms, and establishing monitoring procedures for suspicious activities within the application. Network segmentation and least privilege access controls can help limit the potential impact if exploitation occurs. Additionally, regular security training for administrators and users can help prevent initial compromise through social engineering or credential theft attacks that might lead to exploitation of this vulnerability. The organization should also conduct thorough security assessments to identify any potential secondary impacts from the vulnerability and ensure that all related systems are properly secured against similar threats.