CVE-2011-0455 in Things BBS
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Things BBS before 2.0.3 and BBS Thread before 2.0.3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 01/09/2018
The CVE-2011-0455 vulnerability represents a critical cross-site scripting flaw affecting Things BBS and BBS Thread software versions prior to 2.0.3. This vulnerability falls under the CWE-79 category, which specifically addresses cross-site scripting attacks where malicious scripts are injected into web applications. The vulnerability stems from inadequate input validation and output encoding mechanisms within the affected software platforms, creating exploitable entry points for remote attackers to execute malicious code within the context of users' browsers.
The technical nature of this vulnerability allows attackers to inject arbitrary web scripts or HTML content through unspecified vectors, making it particularly dangerous due to its broad attack surface. The unspecified vectors suggest that the vulnerability could potentially be exploited through multiple entry points within the application's input handling mechanisms, including form fields, URL parameters, or even user-generated content that gets rendered on web pages. This lack of specific vector identification indicates the vulnerability may be present in various input processing pathways throughout the software architecture, amplifying its potential impact.
From an operational perspective, this vulnerability poses significant risks to organizations utilizing these bulletin board systems, as successful exploitation could lead to session hijacking, credential theft, data exfiltration, and unauthorized access to sensitive information. Attackers could leverage this vulnerability to execute malicious scripts that capture user credentials, redirect users to malicious websites, or perform actions on behalf of authenticated users. The remote nature of the attack means that exploitation does not require physical access to the target system, making it particularly dangerous in networked environments where users interact with the vulnerable applications.
The impact extends beyond simple script injection, as this vulnerability could enable attackers to establish persistent footholds within affected networks. According to ATT&CK framework methodology, this vulnerability aligns with T1059.007 for command and scripting interpreter and T1566 for credential access through social engineering techniques. Organizations using these platforms face potential data breaches, regulatory compliance violations, and reputational damage if exploited successfully. The vulnerability's presence in software versions before 2.0.3 suggests that the developers had not yet implemented adequate security controls or input sanitization measures to prevent such attacks.
Mitigation strategies should focus on immediate software updates to versions 2.0.3 or later, which would contain the necessary patches to address the input validation flaws. Additionally, implementing comprehensive input sanitization, output encoding, and Content Security Policy (CSP) headers can provide defense-in-depth measures. Organizations should conduct thorough security assessments of their deployed versions and consider implementing web application firewalls to detect and prevent exploitation attempts. Regular security updates, proper input validation, and user education regarding suspicious web content remain essential practices to protect against similar vulnerabilities in the future.