CVE-2020-2804 Denial of service in MySQL Server
An unauthenticated attacker can cause a complete denial of service in MySQL Server via the Memcached component.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-2804?
CVE-2020-2804 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 15 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Memcached). Supported versions that are affected are 5.6.47 and prior, 5.7.29 and prior and 8.0.19 and prior. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.0 Base Score 5.9 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).
Which versions are affected by CVE-2020-2804?
It affects 7 products.
Products include Canonical Ubuntu Linux, Fedoraproject Fedora, Netapp Active Iq Unified Manager, Netapp Oncommand Insight, Netapp Oncommand Workflow Automation, Netapp Snapcenter and 1 more.
How do I fix CVE-2020-2804?
Apply the vendor's patch.
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-2020-2804 being exploited?
There is no known exploitation of CVE-2020-2804 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as GHSA-cqcc-f4j6-cmh9, UBUNTU-CVE-2020-2804.