CVE-2017-17758 : Security Advisory and Response
Learn about CVE-2017-17758 affecting TP-Link TL-WVR and TL-WAR devices, allowing remote authenticated users to execute arbitrary commands. Find mitigation steps and long-term security practices here.
TP-Link TL-WVR and TL-WAR devices have a security vulnerability that allows remote authenticated users to run arbitrary commands by manipulating the interface field of an admin/dhcps command in the cgi-bin/luci section.
Understanding CVE-2017-17758
This CVE entry discloses a critical security flaw in TP-Link TL-WVR and TL-WAR devices that can be exploited by authenticated remote users.
What is CVE-2017-17758?
The vulnerability in TP-Link TL-WVR and TL-WAR devices permits remote authenticated users to execute arbitrary commands through the manipulation of the interface field in a specific admin/dhcps command.
The Impact of CVE-2017-17758
The security issue enables attackers to run unauthorized commands on the affected devices, potentially leading to unauthorized access, data theft, or further compromise of the device.
Technical Details of CVE-2017-17758
This section delves into the technical aspects of the CVE entry.
Vulnerability Description
The vulnerability arises from the zone_get_iface_bydev function located in /usr/lib/lua/luci/controller/admin/dhcps.lua within the uhttpd system.
Affected Systems and Versions
- Product: TP-Link TL-WVR and TL-WAR devices
- Vendor: TP-Link
- Versions: All versions are affected
Exploitation Mechanism
The vulnerability can be exploited by authenticated remote users by inserting shell metacharacters in the interface field of a specific admin/dhcps command.
Mitigation and Prevention
Protecting systems from CVE-2017-17758 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Disable remote access if not required
- Implement strong, unique passwords for device access
- Monitor network traffic for suspicious activities
Long-Term Security Practices
- Regularly update device firmware to patch known vulnerabilities
- Conduct security audits and penetration testing
- Educate users on safe computing practices
Patching and Updates
- Check for firmware updates from TP-Link and apply them promptly to address the vulnerability