CVE-2018-18489 : Exploit Details and Defense Strategies
Learn about CVE-2018-18489 affecting TP-LINK WR840N v2 Firmware 3.16.9 Build 150701 Rel.51516n devices. Discover the impact, technical details, and mitigation steps for this vulnerability.
Remote attackers can utilize the ping feature within the Diagnostic functionality on TP-LINK WR840N v2 Firmware 3.16.9 Build 150701 Rel.51516n devices to initiate a denial of service attack, specifically terminating the HTTP service by altering the packet size.
Understanding CVE-2018-18489
This CVE involves a vulnerability in TP-LINK WR840N v2 Firmware 3.16.9 Build 150701 Rel.51516n devices that allows remote attackers to cause a denial of service by manipulating packet size.
What is CVE-2018-18489?
The ping feature in the Diagnostic functionality on TP-LINK WR840N v2 Firmware 3.16.9 Build 150701 Rel.51516n devices enables remote attackers to disrupt the HTTP service by exceeding the user interface's packet size limit.
The Impact of CVE-2018-18489
- Remote attackers can exploit this vulnerability to launch denial of service attacks, leading to the termination of the HTTP service.
Technical Details of CVE-2018-18489
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability in TP-LINK WR840N v2 Firmware 3.16.9 Build 150701 Rel.51516n devices allows attackers to disrupt the HTTP service by manipulating packet sizes beyond the set limit.
Affected Systems and Versions
- Product: TP-LINK WR840N v2 Firmware 3.16.9 Build 150701 Rel.51516n
- Vendor: TP-LINK
- Version: Not Applicable
Exploitation Mechanism
Attackers can exploit the ping feature in the Diagnostic functionality to send packets exceeding the 1472 size limit, causing a denial of service.
Mitigation and Prevention
Protecting systems from CVE-2018-18489 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Disable the ping feature in the Diagnostic functionality on affected devices.
- Implement network-level protections to filter out malicious packets.
Long-Term Security Practices
- Regularly update firmware to patch known vulnerabilities.
- Conduct security assessments to identify and mitigate potential risks.
Patching and Updates
- Apply patches and updates provided by TP-LINK to address the vulnerability in affected devices.