CVE-2020-8246 Denial of service in Citrix ADC, Citrix Gateway, Citrix SDWAN WAN-OP

High 7.5 Published 18 Sep 2020 Updated 4 Aug 2024

Attackers on the management network can cause a denial of service in Citrix ADC and Gateway products.

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-2020-8246?

CVE-2020-8246 is a high-severity denial of service vulnerability in Citrix ADC, Citrix Gateway, Citrix SDWAN WAN-OP, published on 18 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35, Citrix ADC and NetScaler Gateway 12.1 before 12.1-58.15, Citrix ADC 12.1-FIPS before 12.1-55.187, Citrix ADC and NetScaler Gateway 12.0, Citrix ADC and NetScaler Gateway 11.1 before 11.1-65.12, Citrix SD-WAN WANOP 11.2 before 11.2.1a, Citrix SD-WAN WANOP 11.1 before 11.1.2a, Citrix SD-WAN WANOP 11.0 before 11.0.3f, Citrix SD-WAN WANOP 10.2 before 10.2.7b are vulnerable to a denial of service attack originating from the management network.

Weakness: CWE-400

Which versions are affected by CVE-2020-8246?

It affects 4 products.

Products include Citrix Application Delivery Controller Firmware, Citrix Gateway, Citrix Netscaler Gateway, Citrix Sd-Wan Wanop.

How do I fix CVE-2020-8246?

No fix has been published for CVE-2020-8246 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-2020-8246 being exploited?

There is no known exploitation of CVE-2020-8246 in the wild and no public exploit code.

Sources

Also known as GHSA-5wpp-rjjg-p4xh.