CVE-2021-22884 Node.js bad
Attackers can bypass DNS rebinding protections in Node.js by exploiting the localhost6 whitelist entry, allowing access to local services.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-22884?
CVE-2021-22884 is a high-severity vulnerability in Fedoraproject Fedora, published on 3 Mar 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to DNS rebinding attacks as the whitelist includes “localhost6”. When “localhost6” is not present in /etc/hosts, it is just an ordinary domain that is resolved via DNS, i.e., over network. If the attacker controls the victim's DNS server or can spoof its responses, the DNS rebinding protection can be bypassed by using the “localhost6” domain. As long as the attacker uses the “localhost6” domain, they can still apply the attack described in CVE-2018-7160.
Weakness: CWE-350
Which versions are affected by CVE-2021-22884?
2 open source packages ship an affected version, including node and node-min. It affects 13 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 |
Linux distribution packages (2)
nodejs8 SUSE:Linux Enterprise Module for Web and Scripting 15 SP2 | All versions | 8.17.0-10.9.2 |
nodejs8 openSUSE:Leap 15.2 | All versions | 8.17.0-lp152.3.11.1 |
Products include Fedoraproject Fedora, Netapp Active Iq Unified Manager, Netapp E-Series Performance Analyzer, Netapp Oncommand Insight, Netapp Oncommand Workflow Automation, Netapp Snapcenter and 7 more.
How do I fix CVE-2021-22884?
Upgrade node to a fixed version for your release line: 10.24.0, 12.21.0, 14.16.0 or 15.10.0.
Is CVE-2021-22884 being exploited?
There is no known exploitation of CVE-2021-22884 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as ALPINE-CVE-2021-22884, BIT-node-2021-22884, BIT-node-min-2021-22884, CLEANSTART-2026-DP91673, CLEANSTART-2026-MS57961, DEBIAN-CVE-2021-22884 and 4 more.