CVE-2017-8127 in UMA
Summary
by MITRE
The UMA product with software V200R001 has a cross-site scripting (XSS) vulnerability due to insufficient input validation. An attacker could craft malicious links or scripts to launch XSS attacks.
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Analysis
by VulDB Data Team • 01/11/2023
The CVE-2017-8127 vulnerability resides within the UMA product version V200R001, representing a critical cross-site scripting flaw that fundamentally undermines web application security. This vulnerability stems from inadequate input validation mechanisms within the software's processing pipeline, creating an exploitable entry point for malicious actors to inject harmful scripts into web interfaces. The flaw operates by failing to properly sanitize user-supplied data before rendering it within web pages, thereby allowing attackers to execute arbitrary JavaScript code in the context of other users' browsers. This type of vulnerability directly aligns with CWE-79, which specifically addresses cross-site scripting weaknesses in software applications. The UMA product's web interface becomes a vector for malicious payload delivery when users encounter crafted URLs or content that triggers the vulnerable code path. Attackers can leverage this vulnerability to steal session cookies, perform unauthorized actions on behalf of victims, or redirect users to malicious websites. The security implications extend beyond simple data theft, as XSS vulnerabilities often serve as initial footholds for more sophisticated attacks within enterprise environments.
The operational impact of CVE-2017-8127 manifests through multiple attack vectors that exploit the fundamental flaw in input validation. When users interact with the UMA interface, any unsanitized input can be manipulated to inject malicious scripts that execute in the victim's browser context. The vulnerability's exploitation typically involves crafting malicious links or content that, when processed by the vulnerable software, triggers script execution within legitimate user sessions. This creates a persistent threat where attackers can maintain access to compromised systems through stolen session tokens or by executing commands on behalf of authenticated users. The attack surface expands significantly when considering that UMA products often serve as management interfaces for network infrastructure, making successful exploitation potentially devastating for enterprise security. From an operational perspective, this vulnerability can lead to unauthorized access to sensitive network management functions, data exfiltration, and establishment of persistent backdoors within the network infrastructure. The vulnerability's presence in V200R001 specifically indicates that organizations using this version face elevated risk without proper mitigations in place.
Mitigation strategies for CVE-2017-8127 require immediate implementation of robust input validation and output encoding measures to prevent malicious script injection. Organizations should prioritize upgrading to patched versions of the UMA software where available, as this represents the most effective long-term solution to address the root cause. Additionally, implementing proper content security policies and input sanitization frameworks can provide defense-in-depth measures while awaiting official patches. Network segmentation and monitoring solutions should be deployed to detect anomalous traffic patterns that may indicate exploitation attempts. Security teams should also conduct comprehensive vulnerability assessments to identify other potential XSS vulnerabilities within the same product line or related systems. The remediation process must include thorough testing to ensure that input validation mechanisms properly handle all character sets and encoding variations that attackers might employ. From an ATT&CK framework perspective, this vulnerability maps to techniques involving initial access through malicious content and privilege escalation through session hijacking, making it particularly dangerous in enterprise environments. Organizations should also consider implementing web application firewalls and automated security scanning tools to detect and block exploitation attempts before they can succeed. Regular security training for administrators and developers helps ensure that input validation practices are maintained throughout the software development lifecycle, preventing similar vulnerabilities from emerging in future versions.