CVE-2017-16959 : Exploit Details and Defense Strategies
Learn about CVE-2017-16959 affecting TP-Link TL-WVR, TL-WAR, TL-ER, and TL-R devices. Find out how authenticated users can remotely test for arbitrary file existence and the necessary mitigation steps.
CVE-2017-16959 was published on November 27, 2017, and affects TP-Link TL-WVR, TL-WAR, TL-ER, and TL-R devices. The vulnerability allows authenticated users to test for the existence of arbitrary files remotely.
Understanding CVE-2017-16959
This CVE involves a locale function present in cgi-bin/luci on TP-Link devices, enabling authenticated users to check for file presence and potentially perform remote file testing.
What is CVE-2017-16959?
The vulnerability in TP-Link devices allows authenticated users to send specific requests to the set_sysinfo and get_sysinfo functions, potentially leading to remote file testing.
The Impact of CVE-2017-16959
The vulnerability enables authenticated users to test for the existence of arbitrary files remotely, posing a risk of unauthorized access and potential data breaches.
Technical Details of CVE-2017-16959
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The locale function in cgi-bin/luci on TP-Link devices allows authenticated users to test for arbitrary file existence by sending specific requests.
Affected Systems and Versions
- Affected devices: TP-Link TL-WVR, TL-WAR, TL-ER, and TL-R
- Versions: Not specified
Exploitation Mechanism
Authenticated users can exploit the vulnerability by sending crafted requests to the set_sysinfo and get_sysinfo functions in /usr/lib/lua/luci/controller/locale.lua in uhttpd.
Mitigation and Prevention
Protecting systems from CVE-2017-16959 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by TP-Link promptly
- Monitor network traffic for any suspicious activities
- Restrict access to vulnerable devices
Long-Term Security Practices
- Regularly update firmware and software on TP-Link devices
- Conduct security audits and penetration testing
- Educate users on safe browsing habits and security best practices
Patching and Updates
Ensure that all TP-Link devices are updated with the latest firmware and security patches to mitigate the risk of exploitation.