CVE-2018-10108 in DIR-815
Summary
by MITRE
D-Link DIR-815 REV. B (with firmware through DIR-815_REVB_FIRMWARE_PATCH_2.07.B01) devices have XSS in the Treturn parameter to /htdocs/webinc/js/bsc_sms_inbox.php.
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Analysis
by VulDB Data Team • 01/25/2020
The vulnerability CVE-2018-10108 represents a cross-site scripting flaw identified in D-Link DIR-815 REV. B wireless routers running firmware versions up to DIR-815_REVB_FIRMWARE_PATCH_2.07.B01. This issue resides within the web interface of the device, specifically in the handling of the Treturn parameter within the /htdocs/webinc/js/bsc_sms_inbox.php script. The vulnerability stems from inadequate input validation and sanitization of user-supplied data, allowing malicious actors to inject arbitrary JavaScript code into the web application's response. The affected parameter Treturn is processed without proper escaping or encoding, creating an avenue for attackers to execute malicious scripts in the context of the victim's browser session.
This cross-site scripting vulnerability falls under CWE-79 which specifically addresses Cross-Site Scripting flaws in web applications. The attack vector exploits the router's web interface where legitimate users might be tricked into visiting a malicious page or clicking on compromised links. The vulnerability enables attackers to perform various malicious activities including session hijacking, credential theft, and redirection to malicious websites. The impact is particularly concerning given that these routers are commonly deployed in home and small office environments where users may not be security-aware and could inadvertently trigger the malicious payload through normal browsing activities.
The operational impact of this vulnerability extends beyond simple script execution as it provides attackers with persistent access to the router's administrative interface. Once exploited, attackers can manipulate the router configuration, redirect traffic through malicious proxies, or establish persistent backdoors for further network infiltration. The vulnerability affects the confidentiality, integrity, and availability of the network infrastructure by potentially allowing unauthorized access to the device's management functions. The affected firmware versions suggest that this issue was present in a significant number of consumer-grade routers, making it a widespread concern for network administrators and security professionals managing D-Link devices in their environments.
Mitigation strategies for this vulnerability should include immediate firmware updates from D-Link to address the XSS flaw in the affected router models. Network administrators should implement additional security measures such as network segmentation and monitoring of suspicious traffic patterns that may indicate exploitation attempts. The implementation of Content Security Policy headers can provide additional protection against XSS attacks by restricting the sources from which scripts can be loaded. Regular security audits of network devices should be conducted to identify similar vulnerabilities in other router models and ensure that all firmware components are up to date. Organizations should also consider implementing web application firewalls to detect and prevent exploitation attempts targeting the vulnerable parameter Treturn in the bsc_sms_inbox.php script. The vulnerability demonstrates the critical importance of secure coding practices and proper input validation in network device firmware development, aligning with ATT&CK technique T1212 which focuses on exploitation of software vulnerabilities for privilege escalation and persistence within network environments.