CVE-2005-4785 in QuickBlogger
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in QuickBlogger 1.4 and earlier allows remote attackers to inject arbitrary web script or HTML via the (1) author ("your name") and (2) "comment" section.
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Analysis
by VulDB Data Team • 07/16/2018
The CVE-2005-4785 vulnerability represents a critical cross-site scripting flaw in QuickBlogger version 1.4 and earlier, exposing web applications to malicious code injection attacks. This vulnerability specifically targets the author name and comment sections of the blogging platform, creating a pathway for remote attackers to execute arbitrary web scripts or HTML content within the context of other users' browsers. The flaw demonstrates a fundamental failure in input validation and output sanitization within the application's user interaction components.
The technical implementation of this vulnerability stems from inadequate filtering of user-supplied data in two primary input fields. When users enter information into the author name field or comment section, the application fails to properly sanitize or escape special characters that could be interpreted as HTML or JavaScript code. This allows attackers to craft malicious payloads that, when executed by other users viewing the affected content, can perform unauthorized actions such as stealing session cookies, redirecting users to malicious sites, or executing arbitrary commands within the victim's browser context. The vulnerability operates under the CWE-79 category of Cross-Site Scripting, which is classified as a critical weakness in web application security.
The operational impact of this vulnerability extends beyond simple data corruption or display issues. Attackers can leverage this flaw to establish persistent malicious presence within the blog environment, potentially using it as a stepping stone for more sophisticated attacks. The vulnerability enables man-in-the-middle scenarios where users' browser sessions can be hijacked, leading to unauthorized access to personal accounts and potential data exfiltration. Additionally, the attack surface is particularly dangerous because blog platforms often serve as trusted sources of information, making the exploitation more likely to succeed due to user complacency.
Security practitioners should implement comprehensive input validation and output encoding mechanisms to address this vulnerability. The recommended mitigation strategies include implementing strict sanitization of all user inputs, employing context-specific output encoding for HTML, JavaScript, and URL contexts, and utilizing web application firewalls to detect and block malicious payloads. Organizations should also consider implementing Content Security Policy headers to limit the execution of unauthorized scripts. The vulnerability aligns with ATT&CK technique T1566 for initial access through malicious content, making it particularly dangerous in environments where user-generated content is prevalent and not properly secured against injection attacks.