CVE-2018-15700 Denial of service in TP-Link TL-WRN841N

Medium 6.5 Published Updated

An unauthenticated LAN user can cause a denial of service on TP-Link routers by sending a crafted HTTP header with an unexpected Referer field.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2018-15700?

CVE-2018-15700 is a medium-severity denial of service vulnerability in TP-Link TL-WRN841N, published on 1 Oct 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The web interface in TP-Link TL-WRN841N 0.9.1 4.16 v0348.0 is vulnerable to a denial of service when an unauthenticated LAN user sends a crafted HTTP header containing an unexpected Referer field.

Weakness: CWE-20

Which versions are affected by CVE-2018-15700?

It affects 1 product.

Products include Tp-Link Tl-Wrn841n Firmware.

How do I fix CVE-2018-15700?

No fix has been published for CVE-2018-15700 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-2018-15700 being exploited?

There is no known exploitation of CVE-2018-15700 in the wild and no public exploit code.

Sources

Also known as GHSA-cwh5-c65g-h3xr.

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