CVE-2018-18489 Denial of service in n/a
Remote attackers can cause denial of service on TP-LINK WR840N routers by sending oversized packets to the diagnostic ping feature.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-18489?
CVE-2018-18489 is a medium-severity denial of service vulnerability in n/a, published on 16 Apr 2019. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The ping feature in the Diagnostic functionality on TP-LINK WR840N v2 Firmware 3.16.9 Build 150701 Rel.51516n devices allows remote attackers to cause a denial of service (HTTP service termination) by modifying the packet size to be higher than the UI limit of 1472.
Which versions are affected by CVE-2018-18489?
It affects 1 product.
Products include Tp-Link Wr840n Firmware.
How do I fix CVE-2018-18489?
No fix has been published for CVE-2018-18489 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2018-18489 being exploited?
There is no known exploitation of CVE-2018-18489 in the wild and no public exploit code.
Sources
Also known as GHSA-6cv2-23h8-f75x.