CVE-2013-4670 in Web Gateway
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in the management console on the Symantec Web Gateway (SWG) appliance before 5.1.1 allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 05/20/2021
The CVE-2013-4670 vulnerability represents a critical security flaw in Symantec Web Gateway appliances that affects versions prior to 5.1.1. This vulnerability manifests as multiple cross-site scripting vulnerabilities within the management console component of the appliance, creating a significant attack surface for remote threat actors. The management console serves as the primary administrative interface for configuring and managing the web gateway appliance, making it a prime target for attackers seeking unauthorized access to network security controls. These vulnerabilities enable remote attackers to inject arbitrary web script or HTML code into the management interface, potentially compromising the entire security infrastructure.
The technical nature of this vulnerability stems from insufficient input validation and output encoding within the Symantec Web Gateway management console. Attackers can exploit these weaknesses through unspecified vectors that likely involve manipulating form inputs, URL parameters, or other user-controllable data fields within the administrative interface. The lack of proper sanitization mechanisms allows malicious payloads to be executed in the context of authenticated users who access the management console, potentially leading to session hijacking, privilege escalation, or complete administrative control over the appliance. This vulnerability directly aligns with CWE-79, which identifies cross-site scripting as a weakness where untrusted data is improperly handled in web applications.
The operational impact of CVE-2013-4670 extends beyond simple script injection, as it represents a fundamental compromise of the security appliance's integrity. When attackers successfully exploit these vulnerabilities, they can manipulate the management console to redirect traffic, modify security policies, or even gain access to sensitive configuration data. The implications are particularly severe because the management console typically contains credentials, access controls, and security policies that govern the entire network traffic filtering. An attacker who gains control of the management interface can effectively disable security protections, create backdoors, or redirect traffic through malicious endpoints. This vulnerability aligns with ATT&CK technique T1078 for valid accounts and T1566 for credential harvesting, as it provides a pathway for attackers to escalate privileges and maintain persistent access to critical network infrastructure.
Organizations utilizing Symantec Web Gateway appliances should prioritize immediate remediation through the official 5.1.1 update release, which addresses these XSS vulnerabilities through proper input validation and output encoding mechanisms. Additional mitigations include implementing network segmentation to limit access to the management console, deploying web application firewalls to monitor for malicious script injection attempts, and restricting administrative access to trusted networks only. The vulnerability underscores the importance of maintaining current security appliance versions and implementing robust patch management processes. Security teams should also conduct thorough penetration testing and code reviews of administrative interfaces to identify similar weaknesses in other security appliances and web applications. Organizations with legacy systems should consider implementing additional monitoring controls around management console access and establishing incident response procedures specifically tailored to protect against administrative interface compromises.