CVE-2007-3561 in Efendy Blog
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in ara.asp in Efendy Blog 1.0 allows remote attackers to inject arbitrary web script or HTML via the ara parameter. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
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Analysis
by VulDB Data Team • 10/27/2017
The CVE-2007-3561 vulnerability represents a classic cross-site scripting flaw in the Efendy Blog 1.0 content management system, specifically within the ara.asp component. This vulnerability classifies under CWE-79 which defines improper neutralization of input during web page generation, making it a fundamental web application security weakness that has persisted across decades of software development. The flaw exists in the handling of user-supplied input through the 'ara' parameter, which is processed without adequate sanitization or encoding mechanisms. Attackers can exploit this vulnerability by crafting malicious script payloads that get executed in the context of other users' browsers when they view the affected page, creating a persistent threat vector that can be leveraged for session hijacking, credential theft, or redirection to malicious sites.
The technical implementation of this vulnerability demonstrates a failure in input validation and output encoding practices that are fundamental to secure web application development. When the 'ara' parameter is passed to the ara.asp script, the application fails to properly sanitize or escape the input before incorporating it into dynamic web page content. This allows attackers to inject malicious HTML or JavaScript code that gets rendered as part of the normal page output, creating a persistent XSS vector that can affect any user who visits the compromised page. The vulnerability is categorized as a reflected XSS attack since the malicious payload is reflected back to users through the web application's response, though the exact mechanism of execution would depend on how the parameter is subsequently processed and displayed.
The operational impact of CVE-2007-3561 extends beyond simple script injection, as it provides attackers with the capability to compromise user sessions and potentially escalate privileges within the affected web application. From an adversarial perspective, this vulnerability aligns with ATT&CK technique T1531 which describes the use of malicious code injection to gain access to systems. The vulnerability could enable attackers to steal session cookies, redirect users to phishing sites, or inject malicious content that could be used to harvest credentials from unsuspecting visitors. Given that this vulnerability affects a blog platform, it could be particularly dangerous as it might allow attackers to compromise the administrator account or inject malicious content that would be visible to all visitors, effectively creating a command and control channel or a persistent backdoor.
Mitigation strategies for CVE-2007-3561 must address both the immediate vulnerability and broader security practices within the affected web application. The most effective remediation involves implementing proper input validation and output encoding mechanisms that ensure all user-supplied data is sanitized before being processed or displayed. This includes applying context-specific encoding such as HTML entity encoding for content displayed in web pages, JavaScript encoding for data used in script contexts, and URL encoding for data used in URL parameters. Organizations should also implement Content Security Policy headers to limit the sources from which scripts can be loaded, and consider implementing web application firewalls to detect and block malicious payloads. Additionally, regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other components of the application, as this vulnerability demonstrates poor input handling practices that are likely to exist elsewhere in the codebase. The remediation efforts should also include updating to newer versions of the Efendy Blog software where such vulnerabilities have been addressed, as the affected version appears to be outdated and may contain additional security weaknesses.