Cross-Site Scripting in Cybozu Garoon Email Enables Password Reset

Executive Summary

This vulnerability is a cross-site scripting (XSS) flaw in the E-mail function of Cybozu Garoon versions 5.0.0 to 6.0.3. It allows an attacker to execute malicious scripts within the web browser of a user, which can lead to the attacker resetting arbitrary users' passwords without needing special privileges but requiring user interaction. [1, 2]

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Impact Analysis

The vulnerability can allow attackers to reset arbitrary users' passwords by executing malicious scripts via the email function. This compromises the integrity of user accounts, potentially allowing unauthorized access or control over affected accounts. It does not impact confidentiality or availability but has a high impact on integrity. [1, 2]

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Mitigation Strategies

The immediate step to mitigate this vulnerability is to upgrade Cybozu Garoon to version 6.17.0 or later, as this version contains the fix for the vulnerability. No patches will be provided for versions prior to 6. Users should ensure they update to the latest version to protect against this cross-site scripting vulnerability. [2]

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Compliance Impact

The vulnerability allows attackers to execute malicious scripts that can reset arbitrary users’ passwords, which poses a risk to the integrity of user accounts.

Such unauthorized password resets and potential account compromises could lead to violations of security requirements in common standards and regulations like GDPR and HIPAA, which mandate protection of user data and access controls.

However, the provided information does not explicitly discuss the impact on compliance with these standards or regulations.

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