CVE-2013-2305 in Cybozu Office
Summary
by MITRE
Cross-site request forgery (CSRF) vulnerability in Cybozu Office before 8.1.6 and 9.x before 9.3.0, Cybozu Dezie before 8.0.7, and Cybozu Mailwise before 5.0.4 allows remote attackers to hijack the authentication of arbitrary users for requests that change passwords.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 02/28/2018
The CVE-2013-2305 vulnerability represents a critical cross-site request forgery flaw affecting multiple Cybozu software products including Cybozu Office, Cybozu Dezie, and Cybozu Mailwise. This vulnerability resides in the authentication handling mechanisms of these applications, specifically in how they validate and process user requests. The flaw allows remote attackers to exploit the absence of proper anti-CSRF token validation, enabling them to craft malicious requests that can be executed by authenticated users without their knowledge or consent.
The technical implementation of this vulnerability stems from insufficient protection against cross-site request forgery attacks, which is categorized under CWE-352 in the Common Weakness Enumeration catalog. The vulnerability occurs when the affected applications fail to properly verify the authenticity of requests originating from different domains, particularly when these requests attempt to modify critical user parameters such as passwords. Attackers can leverage this weakness by tricking users into visiting malicious websites or clicking on compromised links that automatically submit forged requests to the vulnerable Cybozu applications.
The operational impact of this vulnerability is severe as it allows attackers to hijack user sessions and perform unauthorized actions with the privileges of authenticated users. When an attacker successfully exploits this CSRF vulnerability, they can change user passwords without requiring any authentication credentials, effectively gaining unauthorized control over user accounts. This creates a significant risk for organizations using these Cybozu products, as compromised user accounts can lead to data breaches, unauthorized access to sensitive information, and potential lateral movement within network environments. The vulnerability affects multiple versions of Cybozu applications, with specific patch versions identified for remediation including Cybozu Office 8.1.6 and 9.3.0, and Cybozu Dezie 8.0.7, and Cybozu Mailwise 5.0.4.
From an attack perspective, this vulnerability aligns with several techniques documented in the MITRE ATT&CK framework, particularly those related to credential access and privilege escalation. The attack chain typically involves initial reconnaissance to identify vulnerable applications, crafting malicious payloads that exploit the CSRF weakness, and executing these attacks through social engineering or by compromising user sessions. Organizations should implement comprehensive mitigations including the deployment of anti-CSRF tokens, proper request validation mechanisms, and regular security updates to address this vulnerability. The fix requires updating to the patched versions of the affected software components, along with implementing additional security controls such as Content Security Policy headers and proper session management to prevent similar vulnerabilities from occurring in other application components.