Horizon Alert
Summary of the vulnerability and why it matters
Roundcube webmail is affected by a cross-site scripting vulnerability. This flaw occurs when handling plain text emails containing specially crafted links. The vulnerability could allow unauthorized parties to inject malicious scripts into the webmail interface.
- Vulnerable component: Roundcube webmail
- Core weakness: Flawed handling of crafted links
- Main business impact: Potential data exposure
Attack Path
How an attacker could exploit the issue
This vulnerability allows for cross-site scripting (XSS) attacks through specially crafted text-based email messages. An attacker can leverage this by sending an email containing a malicious link that, when processed by the affected system, can execute arbitrary code within the user's browser session. This could lead to unauthorized access to user data or session hijacking.
- Exposure of the webmail application to the internet.
- An attacker sends a crafted email.
- User interaction with the malicious link.
- Potential for unauthorized data access.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability presents a significant risk to organizations using affected Roundcube webmail versions. Attackers with moderate technical skill could exploit this to inject malicious scripts into the webmail interface. This could lead to unauthorized access to sensitive information or disruption of services. The known exploitability of this vulnerability suggests it should be treated with high urgency.
- Attackers with moderate skill.
- Publicly accessible webmail interface.
- High business risk and urgency.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
A vulnerability exists in Roundcube Webmail that could allow for cross-site scripting. This could lead to the disclosure of information through crafted links in plain text emails. Organizations should prioritize addressing this risk to protect their systems and data.
- Identify Roundcube instances.
- Reduce exposure or isolate risk.
- Apply vendor fix, verify, and monitor.
