CVE-2013-3396 in SMA
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the web framework in Cisco Content Security Management on Security Management Appliance (SMA) devices allows remote attackers to inject arbitrary web script or HTML via an unspecified parameter, aka Bug ID CSCuh24749.
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Analysis
by VulDB Data Team • 05/06/2018
The vulnerability described in CVE-2013-3396 represents a critical cross-site scripting flaw within Cisco's Content Security Management framework operating on Security Management Appliance devices. This issue affects the web interface component of the SMA platform, which serves as the management console for Cisco's content security solutions. The vulnerability specifically resides in how the web framework processes user input, creating an avenue for malicious actors to execute arbitrary code within the context of a victim's browser session. The flaw is particularly concerning as it enables remote code execution without requiring authentication, making it accessible to any attacker who can reach the vulnerable device's management interface.
The technical implementation of this XSS vulnerability stems from insufficient input validation and output encoding within the web application layer of the SMA device. Attackers can exploit this weakness by crafting malicious payloads through an unspecified parameter that flows directly into the web framework's rendering process. This parameter processing failure allows the framework to treat malicious script code as legitimate content, thereby executing the injected HTML or JavaScript code within the browser context of authenticated users who interact with the compromised interface. The vulnerability aligns with CWE-79 which categorizes improper neutralization of input during web page generation, specifically addressing cross-site scripting scenarios where user-controllable data enters a web page without proper validation or encoding.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable sophisticated attack chains that compromise the entire security management infrastructure. An attacker who successfully exploits this vulnerability could potentially escalate privileges, access sensitive configuration data, manipulate security policies, or even redirect users to malicious websites. The compromised SMA device serves as a central point of control for content security policies, making the exploitation of this flaw particularly dangerous as it could allow attackers to bypass security controls or gain unauthorized access to protected network resources. This vulnerability also creates opportunities for persistent threats where attackers can establish backdoors or maintain long-term access to the security management infrastructure.
Cisco has addressed this vulnerability through firmware updates and patches released as part of their regular security advisory cycle. Organizations should immediately implement these updates to remediate the identified XSS flaw. Additional mitigations include implementing network segmentation to limit access to the SMA management interface, deploying web application firewalls to filter malicious traffic, and enforcing strict access controls through authentication mechanisms. The vulnerability demonstrates the importance of secure coding practices in web applications and highlights the necessity of input validation and output encoding as fundamental security controls. This issue also aligns with ATT&CK technique T1059 which covers command and scripting interpreter, as the successful exploitation could enable attackers to execute commands through the compromised web interface. Organizations should also consider implementing monitoring solutions to detect anomalous access patterns or unusual parameter inputs that might indicate exploitation attempts against similar vulnerabilities in their security infrastructure.