Medium severity

XSS vulnerability in error page of ISMail

Cross-Site Scripting vulnerability on the ISMail webmail error page.

Original release date
September 2006
Discovered by
Vicente Aguilera Díaz
Severity
3 / 5 Scale 1–5
Affected product
ISMail 2.0 (possibly all versions)

Antecedentes

ISMail is a webmail system programmed in HTML and PHP, designed to work with any IMAP server. It requires PHP 4.2 or later with IMAP and session support, and supports multiple data stores (XML, MySQL, and PostgreSQL, among others).

Description

The error.php page receives the error parameter in the query string, which it displays as an error message. An attacker can manipulate it to inject arbitrary HTML or script code and perform XSS attacks to obtain the session cookies of authenticated users or alter the appearance of the page.

Business impact

An attacker can hijack the sessions of other authenticated users and access their email, or modify the appearance of the error page.

Affected systems

Tested on the latest version of ISMail (2.0, released on January 20, 2005). All versions are possibly affected.

Solución

Update to the repository version, where the manufacturer fixed the vulnerability.

Calendario de divulgación

Sep 27, 2006 Vulnerability discovered by Internet Security Auditors.
28 Sep 2006 Initial notification sent to the manufacturer.
1 Oct 2006 The manufacturer fixes the vulnerability in the repository.

References

Sobre Internet Security Auditors

Company based in Spain and Colombia, specializing in web application auditing, network security, penetration testing, and compliance implementation and assessment. Our clients include some of the largest finance, telecommunications, insurance, and ICT companies. A vendor-independent provider with in-depth experience since 2001. Our R&D efforts include vulnerability research, collaboration on open security projects, whitepapers, and participation in industry events.

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