CVE-2018-12122: High severity Nodejs Node.js vulnerability
A flaw was found in Node.js versions before 6.15.0, 8.14.0, 10.14.0 and 11.3.0. A Slowloris HTTP Denial of Service. An attacker can cause a Denial of Service (DoS) by sending headers very slowly keeping HTTP or HTTPS connections and associated resources alive for a long period of time.
References: https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/
Other sources
CVE-2018-12121 Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Denial of Service with large HTTP headers: By using a combination of many requests with maximum sized headers (almost 80 KB per connection), and carefully timed completion of the headers, it is possible to cause the HTTP server to abort from heap allocation failure. Attack potential is mitigated by the use of a load balancer or other proxy layer. CVE-2018-12122 Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Slowloris HTTP Denial of Service: An attacker can cause a Denial of Service (DoS) by sending headers very slowly keeping HTTP or HTTPS connections and associated resources alive for a long period of time. CVE-2018-12123 Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Hostname spoofing in URL parser for javascript protocol: If a Node.js application is using url.parse() to determine the URL hostname, that hostname can be spoofed by using a mixed case "javascript:" (e.g. "javAscript:") protocol (other protocols are not affected). If security decisions are made about the URL based on the hostname, they may be incorrect.
— F5
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.5.117.1.3 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 8.4.1 - Upgrade
Upgrade
redhat/nodejsto a version that resolves this vulnerability.Fixed in 6.15.1 - Upgrade
Upgrade
redhat/nodejsto a version that resolves this vulnerability.Fixed in 8.14.0 - Upgrade
Upgrade
redhat/nodejsto a version that resolves this vulnerability.Fixed in 10.14.0 - Upgrade
Upgrade
redhat/nodejsto a version that resolves this vulnerability.Fixed in 11.3.0 - Upgrade
Upgrade
Node.jsto a version that resolves this vulnerability.Fixed in 6.15.0 - Upgrade
Upgrade
Node.jsto a version that resolves this vulnerability.Fixed in 8.14.0 - Upgrade
Upgrade
Node.jsto a version that resolves this vulnerability.Fixed in 10.14.0 - Upgrade
Upgrade
Node.jsto a version that resolves this vulnerability.Fixed in 11.3.0 - Compensating control
Mitigate Slowloris HTTP DoS by using a load balancer or other proxy layer (applies to Slowloris HTTP Denial of Service; HTTP/HTTPS headers sent very slowly keeping connections/resources alive).
Event History
Frequently Asked Questions
What is the vulnerability ID of this Node.js vulnerability?
The vulnerability ID of this Node.js vulnerability is CVE-2018-12122.
What is the title of this Node.js vulnerability?
The title of this Node.js vulnerability is 'Slowloris HTTP Denial of Service.'
What is the severity of CVE-2018-12122?
CVE-2018-12122 has a severity rating of high (7.5).
How does this vulnerability affect Node.js?
This vulnerability affects all versions of Node.js prior to 6.15.0, 8.14.0, 10.14.0, and 11.3.0.
How can I fix the CVE-2018-12122 vulnerability?
To fix the CVE-2018-12122 vulnerability, you should update Node.js to version 6.15.1, 8.14.0, 10.14.0, or 11.3.0 depending on your version.