CVE-2015-3005 in Junos
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the Dynamic VPN in Juniper Junos 12.1X44 before 12.1X44-D45, 12.1X46 before 12.1X46-D30, 12.1X47 before 12.1X47-D20, and 12.3X48 before 12.3X48-D10 on SRX series devices allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 05/03/2022
The CVE-2015-3005 vulnerability represents a critical cross-site scripting flaw within the Dynamic VPN functionality of Juniper Junos operating systems running on SRX series devices. This vulnerability exists in multiple version ranges including 12.1X44 before 12.1X44-D45, 12.1X46 before 12.1X46-D30, 12.1X47 before 12.1X47-D20, and 12.3X48 before 12.3X48-D10, making it a widespread concern for organizations utilizing these network security appliances. The vulnerability specifically affects the Dynamic VPN component which is responsible for establishing secure remote access connections, creating a potential attack surface that could be exploited by malicious actors to compromise the security posture of affected networks.
This XSS vulnerability stems from insufficient input validation and output encoding within the Dynamic VPN interface of the Junos operating system. Attackers can leverage this flaw by injecting malicious web scripts or HTML content through unspecified vectors that are not fully documented in the initial vulnerability report. The technical implementation likely involves the failure to properly sanitize user-supplied input parameters that are subsequently reflected in web responses without adequate HTML escaping or context-appropriate encoding mechanisms. The vulnerability manifests when legitimate users interact with the Dynamic VPN web interface, making it particularly dangerous as it can affect both administrators and remote users who access the system through these interfaces.
The operational impact of CVE-2015-3005 extends beyond simple script injection, as it can enable attackers to perform session hijacking, steal sensitive authentication tokens, and potentially gain unauthorized access to the affected SRX devices. This vulnerability aligns with CWE-79 which classifies cross-site scripting as a critical weakness in web application security, where improper validation of input data leads to malicious code execution in the context of the victim's browser. The attack vector allows remote exploitation without requiring authentication, making it particularly dangerous as it can be leveraged by threat actors from outside the network perimeter. In the context of the ATT&CK framework, this vulnerability maps to technique T1071.004 for Application Layer Protocol: DNS and T1566 for Credential Access through the potential for session manipulation and privilege escalation.
Organizations affected by this vulnerability should implement immediate mitigation strategies including applying the vendor-supplied patches and updates for the affected Junos versions. Network administrators should also consider implementing additional security controls such as web application firewalls, input validation rules, and monitoring for suspicious traffic patterns that could indicate exploitation attempts. The vulnerability demonstrates the critical importance of maintaining up-to-date security patches for network infrastructure devices, as these systems often serve as primary attack vectors for sophisticated cyber campaigns. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other network components, particularly those handling user input through web interfaces. The incident underscores the necessity of implementing defense-in-depth strategies that include both perimeter security measures and internal network segmentation to limit the potential impact of such vulnerabilities.