CVE-2017-10612 in Junos Space
Summary
by MITRE
A persistent site scripting vulnerability in Juniper Networks Junos Space allows users who can change certain configuration to implant malicious Javascript or HTML which may be used to steal information or perform actions as other Junos Space users or administrators. Affected releases are Juniper Networks Junos Space all versions prior to 17.1R1.
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Analysis
by VulDB Data Team • 01/03/2023
This vulnerability represents a critical persistent cross-site scripting flaw in Juniper Networks Junos Space platform that enables authenticated attackers with configuration modification privileges to inject malicious javascript or html code into the system. The vulnerability exists within the web interface processing mechanisms where user-supplied input is not properly sanitized or validated before being rendered in the browser context. This persistent nature means that the injected malicious code remains stored within the application's database or configuration files and executes every time the affected page is accessed by legitimate users or administrators. The flaw specifically impacts all versions of Junos Space prior to 17.1R1, making it a widespread issue affecting numerous deployments across enterprise networks that rely on Juniper's network management solutions.
The technical exploitation of this vulnerability occurs when authenticated users with sufficient privileges modify specific configuration parameters that are subsequently processed through the web interface without adequate input validation. This creates a persistent XSS attack vector where malicious code can be stored in configuration objects and executed in the context of other users' browsers when they access the affected pages. The vulnerability aligns with CWE-79 which describes cross-site scripting flaws where untrusted data is improperly handled within web applications. Attackers can leverage this weakness to execute arbitrary javascript code in the browser context of authenticated users, potentially leading to session hijacking, credential theft, or privilege escalation within the Junos Space environment. The attack chain typically involves an attacker gaining access to a configuration modification account and injecting malicious payloads that persist across user sessions.
The operational impact of this vulnerability extends beyond simple data theft as it represents a significant threat to network management security and integrity. When administrators or other users access compromised pages, their browsers execute the malicious javascript which can perform actions such as stealing session cookies, redirecting users to malicious sites, or even executing commands on behalf of the victim user. This persistent nature makes the attack particularly dangerous as it can remain undetected for extended periods, continuously compromising user sessions and potentially providing attackers with extended access to network management functions. The vulnerability undermines the trust model of the Junos Space platform and can lead to unauthorized access to sensitive network configurations and management capabilities. From an ATT&CK framework perspective, this vulnerability maps to T1059.007 for scripting and T1531 for implantation of additional software, as attackers can establish persistent access through the injected code.
Mitigation strategies for this vulnerability require immediate implementation of the vendor-provided security patch for Junos Space version 17.1R1 and subsequent releases. Organizations should also implement network segmentation and access controls to limit the number of users with configuration modification privileges, following the principle of least privilege. Additional defensive measures include implementing web application firewalls to detect and block suspicious javascript payloads, conducting regular security assessments of the Junos Space environment, and monitoring for unusual configuration changes. Network administrators should also consider disabling unnecessary web interface features and implementing strict input validation policies for all user-supplied data. Regular security training for administrators and monitoring of user access logs can help detect potential exploitation attempts. The vulnerability demonstrates the critical importance of keeping network management platforms updated and maintaining proper access controls to prevent privilege escalation attacks that could compromise entire network infrastructure.