CVE-2006-0469 in UebiMiau
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in UebiMiau 2.7.9, and possibly earlier versions, allows remote attackers to inject arbitrary web script or HTML via a javascript: URI in the SRC attribute of an IMG tag.
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Analysis
by VulDB Data Team • 07/18/2018
The vulnerability identified as CVE-2006-0469 represents a critical cross-site scripting flaw within the UebiMiau email client software version 2.7.9 and potentially earlier releases. This vulnerability resides in the application's handling of image source attributes, specifically when processing javascript: URIs within the SRC parameter of IMG tags. The flaw demonstrates a classic XSS weakness that enables remote attackers to execute malicious scripts within the context of a victim's browser session. The vulnerability is particularly concerning as it allows attackers to inject arbitrary web script or HTML code directly into the application's output, potentially compromising user sessions and data confidentiality.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding within the UebiMiau application's HTML rendering engine. When the application processes email content containing IMG tags with javascript: URIs in their SRC attributes, it fails to properly sanitize or escape these potentially malicious inputs before displaying them to end users. This insufficient sanitization creates an opening for attackers to embed malicious code that executes within the victim's browser context, bypassing normal security boundaries. The vulnerability specifically manifests when the application processes user-supplied content without adequate protection against script injection attacks, making it a prime target for exploitation in web-based environments where users interact with potentially untrusted email content.
The operational impact of this vulnerability extends beyond simple script execution, creating significant risks for organizations relying on UebiMiau for email management. Attackers could leverage this flaw to steal session cookies, redirect users to malicious websites, or inject phishing content that appears legitimate within the email interface. The vulnerability's remote exploitability means that attackers do not require physical access to systems or privileged network positions to carry out successful attacks. This characteristic aligns with ATT&CK technique T1566.001 for Initial Access through Spearphishing Attachments and T1531 for Account Access Through Persistence. The flaw essentially transforms the email client into a vector for broader compromise, potentially enabling attackers to escalate privileges or access sensitive information through session hijacking or credential theft mechanisms.
Organizations affected by this vulnerability should prioritize immediate remediation through software updates to the latest available version of UebiMiau that addresses this XSS flaw. The mitigation strategy should include implementing comprehensive input validation mechanisms that reject or properly encode javascript: URIs within image source attributes. Security measures should also incorporate output encoding practices that prevent malicious content from being executed in browser contexts. Additionally, network segmentation and monitoring solutions should be deployed to detect anomalous patterns in email traffic that might indicate exploitation attempts. The vulnerability demonstrates the critical importance of proper HTML sanitization and input validation, principles that align with CWE-79 for Cross-site Scripting and the broader OWASP Top Ten category of injection flaws. Organizations should also consider implementing web application firewalls and content security policies to provide additional defense-in-depth measures against similar vulnerabilities that may exist in other email client applications or web-based interfaces.