CVE-2020-5591 Denial of service in XACK DNS
Remote attackers can cause denial of service or use the resolver for reflection attacks, affecting XACK DNS users.
- 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-2020-5591?
CVE-2020-5591 is a high-severity denial of service vulnerability in XACK, Inc. XACK DNS, published on 5 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
XACK DNS 1.11.0 to 1.11.4, 1.10.0 to 1.10.8, 1.8.0 to 1.8.23, 1.7.0 to 1.7.18, and versions before 1.7.0 allow remote attackers to cause a denial of service condition resulting in degradation of the recursive resolver's performance or compromising the recursive resolver as a reflector in a reflection attack.
Weakness: CWE-674
Which versions are affected by CVE-2020-5591?
It affects 1 product.
Products include Xack Xack Dns.
How do I fix CVE-2020-5591?
No fix has been published for CVE-2020-5591 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-2020-5591 being exploited?
There is no known exploitation of CVE-2020-5591 in the wild and no public exploit code.
Sources
Also known as GHSA-rgx8-jrmw-j2jr.