CVE-2024-42010 is a high-severity vulnerability affecting Roundcube versions up to 1.5.7 and 1.6.x up to 1.6.7. This vulnerability allows remote attackers to exploit insufficient filtering of Cascading Style Sheets (CSS) token sequences in rendered e-mail messages, potentially leading to the exposure of sensitive information.
The CVSS score for this vulnerability is 7.5, indicating a high severity level. Its impact on confidentiality is rated high, which means that unauthorized users could gain access to sensitive data, while integrity and availability impacts are not affected. Given the nature of the vulnerability, organizations that use affected versions of Roundcube should prioritize remediation.
Currently, there is no known public exploit for this vulnerability, however, the presence of a proof of concept (PoC) on GitHub indicates that the vulnerability could potentially be exploited. Organizations should remain vigilant and consider the urgency of addressing this vulnerability in their environments.
Organizations should prioritize patching immediately to avoid potential exploitation and protect sensitive information from unauthorized access.
Vulnerability Details
The vulnerability occurs in the mod_css_styles component of Roundcube, which is responsible for handling CSS in email messages. The insufficient filtering of CSS allows an attacker to embed malicious CSS that could be executed when the email is rendered. This can result in unauthorized data access.
The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N, which indicates that the attack can be executed over the network without the need for user interaction, and requires no privileges.
The vulnerability was published on August 5, 2024. It is classified under CWE-200, which denotes exposure of sensitive information.
Technical Analysis
The root cause of CVE-2024-42010 lies in the inadequate filtering mechanism within the mod_css_styles component. This allows CSS token sequences to bypass validation, leading to potential information disclosure.
The attack vector for this vulnerability is network-based, meaning that an attacker could exploit it remotely without needing physical access to the target system. The attack complexity is rated low, indicating that attackers do not require advanced skills to exploit this vulnerability.
No user interaction is required for the exploitation of this vulnerability, which heightens its risk profile. The confidentiality impact is high, as sensitive information could be exposed, while the integrity and availability impacts are rated as none.
Risk & Impact Analysis
Organizations utilizing affected versions of Roundcube are at significant risk of sensitive data exposure. Attackers exploiting this vulnerability could gain access to confidential information, leading to potential data breaches and reputational damage.
The blast radius of this vulnerability is considerable, given that many organizations rely on Roundcube for email communications. If exploited, the potential for massive data leaks could severely impact organizational security.
The urgency for addressing this vulnerability is high, as indicated by its CVSS score and the presence of a proof of concept. Organizations should act swiftly to apply any available patches or updates as a part of their priority patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
This vulnerability affects Roundcube versions through 1.5.7 and 1.6.x through 1.6.7. Organizations should ensure they are running the latest patched versions to mitigate this vulnerability.
Mitigation & Remediation
Organizations should prioritize applying the latest security updates provided by Roundcube. The most recent patched versions are 1.5.8 and 1.6.8, which address this vulnerability.
In the absence of immediate patch availability, organizations may implement workarounds by disabling or restricting the use of CSS in email messages.
Furthermore, organizations should enhance their monitoring capabilities to detect unusual activities related to email handling, and conduct regular security assessments to ensure compliance with security best practices.
For further information on security testing and assessments, organizations can refer to our penetration testing services to identify similar weaknesses.
Detection Guidance
Organizations should monitor logs for any unusual email activities or access patterns that could indicate exploitation attempts. Indicators may include unexpected email content or anomalies in email rendering.
Behavioral anomalies in user interactions with email systems may also be indicative of exploitation. Additionally, organizations should look for network signatures that align with known attack patterns targeting email systems.
AppSecure Threat Intelligence Insight
CVE-2024-42010 highlights ongoing vulnerabilities in widely used email systems like Roundcube. The presence of a proof of concept suggests potential for exploitation, emphasizing the need for organizations to strengthen their email security measures.
This vulnerability serves as a reminder of the importance of keeping software up to date and implementing rigorous security practices. Organizations should prioritize regular updates and security assessments to mitigate risks associated with email communications.
For organizations utilizing cloud services, consider reviewing our guides on cloud penetration testing to ensure your configurations are secure.
Additionally, organizations should consider implementing a penetration testing methodology to further enhance their security posture.
Lastly, monitoring for ransomware tactics is essential, as attackers often exploit vulnerabilities to gain initial access. For more insights on ransomware trends, see our article on ransomware statistics.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)