CVE-2019-5945 in Garoon
Summary
by MITRE
Cybozu Garoon 4.2.4 to 4.10.1 allow remote attackers to obtain the users' credential information via the authentication of Cybozu Garoon.
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Analysis
by VulDB Data Team • 09/23/2023
The vulnerability identified as CVE-2019-5945 affects Cybozu Garoon versions 4.2.4 through 4.10.1, representing a critical security flaw that enables remote attackers to extract user credential information through the authentication mechanism of the system. This vulnerability resides within the authentication process of the Garoon platform, which is widely used for enterprise collaboration and workflow management. The flaw specifically targets the way the system handles authentication tokens and credential validation, creating an avenue for unauthorized access to sensitive user data. Organizations relying on this platform for their business operations face significant risk as this vulnerability could compromise the integrity of their entire user authentication infrastructure.
The technical implementation of this vulnerability stems from improper handling of authentication parameters within the Garoon system's web interface. Attackers can exploit this weakness by crafting malicious requests that manipulate the authentication flow to extract user credentials without proper authorization. The vulnerability operates by leveraging the platform's authentication endpoints to intercept or manipulate session tokens and login credentials, effectively bypassing normal security controls. This flaw represents a classic case of insufficient authentication validation where the system fails to properly sanitize or verify input parameters during the authentication process. The vulnerability is particularly concerning as it allows for credential theft without requiring any local access or prior authentication, making it highly attractive to remote attackers seeking to compromise enterprise environments.
The operational impact of CVE-2019-5945 extends far beyond simple credential theft, as compromised user accounts can lead to full system compromise and data breaches. Organizations using affected versions of Cybozu Garoon face potential unauthorized access to sensitive corporate data, including personal information, business documents, and confidential communications. The vulnerability can enable attackers to escalate privileges, maintain persistent access, and conduct further reconnaissance within the network. This threat vector aligns with attack patterns documented in the MITRE ATT&CK framework under the credential access and privilege escalation domains, specifically targeting the T1078 credential access technique. The vulnerability's remote exploitability means that attackers can leverage it from anywhere on the internet, making it particularly dangerous for organizations without proper network segmentation or monitoring controls in place.
Security professionals should prioritize immediate remediation of this vulnerability by upgrading to versions of Cybozu Garoon that have addressed the authentication flaw. The affected versions represent a significant risk to enterprise security posture and require urgent attention from system administrators and security teams. Organizations should implement network monitoring to detect potential exploitation attempts and consider temporary mitigation measures such as disabling vulnerable authentication endpoints until proper patches are deployed. The vulnerability's classification aligns with CWE-287, which addresses improper authentication issues, and demonstrates the importance of proper input validation and authentication flow management. Regular security assessments should be conducted to identify similar authentication weaknesses in other enterprise systems, as this vulnerability highlights the critical need for robust authentication mechanisms in collaboration platforms. Organizations should also review their incident response procedures to ensure preparedness for potential credential compromise scenarios that may arise from exploitation of this vulnerability.