CVE-2020-5761 Denial of service in Grandstream HT800 Series
Unauthenticated remote attackers can cause CPU exhaustion and denial of service in Grandstream HT800 devices by sending a single character to the TR-069 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-2020-5761?
CVE-2020-5761 is a high-severity denial of service vulnerability in Grandstream HT800 Series, published on 29 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Grandstream HT800 series firmware version 1.0.17.5 and below is vulnerable to CPU exhaustion due to an infinite loop in the TR-069 service. Unauthenticated remote attackers can trigger this case by sending a one character TCP message to the TR-069 service.
Weakness: CWE-835
Which versions are affected by CVE-2020-5761?
It affects 6 products.
Products include Grandstream Ht801 Firmware, Grandstream Ht802 Firmware, Grandstream Ht812 Firmware, Grandstream Ht813 Firmware, Grandstream Ht814 Firmware, Grandstream Ht818 Firmware.
How do I fix CVE-2020-5761?
No fix has been published for CVE-2020-5761 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-2020-5761 being exploited?
There is no known exploitation of CVE-2020-5761 in the wild and no public exploit code.
Other vulnerabilities in Grandstream HT800 Series
Sources
Also known as GHSA-9wp9-6795-j8rm.