CVE-2011-0462 in openSUSE Build Service
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in the login page in the webui component in SUSE openSUSE Build Service (OBS) before 2.1.6 allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 01/10/2018
The CVE-2011-0462 vulnerability represents a critical security flaw in the SUSE openSUSE Build Service web user interface component that affected versions prior to 2.1.6. This vulnerability falls under the category of cross-site scripting attacks, which are classified under CWE-79 as "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')". The vulnerability specifically resides in the login page of the webui component, making it particularly dangerous as it targets one of the most frequently accessed interfaces within the system. The flaw allows remote attackers to inject arbitrary web scripts or HTML content through unspecified vectors, creating a significant attack surface that could be exploited by malicious actors without requiring any authentication credentials.
The technical implementation of this vulnerability stems from inadequate input validation and output sanitization mechanisms within the webui login page functionality. When users interact with the login interface, the system fails to properly sanitize user-supplied input before rendering it back to the browser. This allows attackers to craft malicious payloads that get executed in the context of other users' browsers, potentially leading to session hijacking, credential theft, or redirection to malicious sites. The unspecified vectors suggest that multiple input points within the login page could be exploited, including form fields, URL parameters, or other user-controllable inputs that are not properly filtered or escaped before being processed by the web application.
The operational impact of this vulnerability extends beyond simple data theft or session manipulation. Attackers could leverage this XSS flaw to perform more sophisticated attacks such as cookie theft through document.cookie access, redirect users to phishing sites, or even inject malicious code that could compromise the entire user session. The vulnerability's presence in the login page specifically makes it particularly dangerous as it could be exploited during authentication attempts, potentially allowing attackers to capture login credentials or manipulate the authentication process itself. This type of vulnerability aligns with ATT&CK technique T1059.007 for "Command and Scripting Interpreter: PowerShell" and T1566.001 for "Phishing: Spearphishing Attachment" when considering the broader attack chain that could be initiated through such a flaw.
Mitigation strategies for CVE-2011-0462 should focus on immediate patching of the affected SUSE openSUSE Build Service installations to version 2.1.6 or later, which would contain the necessary security fixes. Additionally, organizations should implement comprehensive input validation and output encoding mechanisms throughout the web application, particularly in authentication interfaces. The implementation of Content Security Policy headers can provide an additional layer of protection against XSS attacks by restricting the sources from which scripts can be loaded. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other components of the system, with particular attention to user input handling and HTML output generation. Network monitoring should also be enhanced to detect suspicious patterns that might indicate exploitation attempts, and security teams should maintain awareness of the broader threat landscape related to web application vulnerabilities and their potential for chaining with other attack vectors.