CVE-2021-22883 Denial of service in Node
Attackers can cause a denial of service in Node.js by exhausting file descriptors or memory through excessive unknown protocol connections.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-22883?
CVE-2021-22883 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 3 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to a denial of service attack when too many connection attempts with an 'unknownProtocol' are established. This leads to a leak of file descriptors. If a file descriptor limit is configured on the system, then the server is unable to accept new connections and prevent the process also from opening, e.g. a file. If no file descriptor limit is configured, then this lead to an excessive memory usage and cause the system to run out of memory.
Which versions are affected by CVE-2021-22883?
2 open source packages ship an affected version, including node and node-min. It affects 9 products.
| Package | Affected | Fixed in |
|---|---|---|
node Bitnami | From 10.0.0 | 10.24.0, 12.21.0, 14.16.0, 15.10.0 |
node-min Bitnami | From 10.0.0 | 10.24.0, 12.21.0, 14.16.0, 15.10.0 |
Products include Fedoraproject Fedora, Netapp E-Series Performance Analyzer, Nodejs Node.js, Oracle Graalvm, Oracle Jd Edwards Enterpriseone Tools, Oracle Mysql Cluster and 3 more.
How do I fix CVE-2021-22883?
Upgrade node to a fixed version for your release line: 10.24.0, 12.21.0, 14.16.0 or 15.10.0.
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-2021-22883 being exploited?
There is no known exploitation of CVE-2021-22883 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as ALPINE-CVE-2021-22883, BIT-node-2021-22883, BIT-node-min-2021-22883, CLEANSTART-2026-LS05917, CLEANSTART-2026-ZM17844, DEBIAN-CVE-2021-22883 and 2 more.