CVE-2017-17537 Denial of service in n/a
Unauthenticated remote attackers can cause a denial of service on MikroTik RouterOS devices by sending malformed data to the DNS service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-17537?
CVE-2017-17537 is a high-severity denial of service vulnerability in n/a, published on 13 Dec 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
MikroTik RouterBOARD v6.39.2 and v6.40.5 allows an unauthenticated remote attacker to cause a denial of service by connecting to TCP port 53 and sending data that begins with many '\0' characters, possibly related to DNS.
Weakness: CWE-20
Which versions are affected by CVE-2017-17537?
It affects 1 product.
Products include Mikrotik Routerboard.
How do I fix CVE-2017-17537?
No fix has been published for CVE-2017-17537 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-2017-17537 being exploited?
There is no known exploitation of CVE-2017-17537 in the wild and no public exploit code.
Sources
Also known as GHSA-326c-f2r3-76jm.