Nginx 1.21.4 vulnerabilities

What is the vulnerability of nginx?

One of the latest NGINX vulnerabilities is that certain versions of PHP 7 running on NGINX with php-fpm enabled are vulnerable to remote code execution. This vulnerability, if left unmitigated, can lead to the disclosure of sensitive information, addition or modification of data, or Denial of Service (DoS) attacks.

What are the security vulnerabilities in nginx 1.18 0?

A vulnerability was found in nginx up to 1.18. 0 (Web Server) and classified as critical. Affected by this issue is an unknown functionality. The manipulation as part of a HTTP Request leads to a request smuggling vulnerability.

Is NGINX affected by Log4j vulnerability?

(NGINX itself is written in C and does not use Java or any Java‑based libraries so was unaffected by the Log4j vulnerabilities…)

Is NGINX affected by Log4j?

NGINX itself is not vulnerable to this exploit, because it is written in C and does not use Java or any Java‑based libraries.

Is Log4j 1.2 vulnerable?

Details of CVE-2021-4104

JMSAppender, in log4j 1.2 version, is vulnerable to deserialization of untrusted data if the attacker has the 'write' permissions to the log4j configuration.

Is Log4j 1.2 affected by vulnerability?

Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data.

Is Log4j 1.28 vulnerable?

1, 1.28. 0, and 1.28. 1 are susceptible to CVE-2021-44832 when used in an application where an attacker has access to create files within the application directory.

Is NGINX 1.20 stable?

Source Releases

There are currently two versions of NGINX available: stable (1.20.x) , mainline (1.21.x) . The mainline branch gets new features and bugfixes sooner but might introduce new bugs as well. Critical bugfixes are backported to the stable branch.

Does Log4j vulnerability affected version 1?

Log4j 1.

x are only vulnerable to this attack when they use JNDI in their configuration. A separate CVE (CVE-2021-4104) has been filed for this vulnerability. To mitigate: Audit your logging configuration to ensure it has no JMSAppender configured.

Is Log4j 2.16 vulnerable?

December 20, 2021

16 and earlier. Log4j 2.16 and earlier does not always protect from infinite recursion in lookup evaluation, which can lead to DoS attacks. This is considered a High (7.5) vulnerability on the CVSS scale.

Is NGINX secure?

nginx's core codebase (memory management, socket handling, etc) is very secure and stable, though vulnerabilities in the main binary itself do pop up from time to time. For this reason it's very important to keep nginx up-to-date.

Is NGINX more secure than Apache?

Since NGINX is designed to be efficient, it doesn't need to search for . htaccess files and interpret them, making it able to serve a request faster than Apache. NGINX keeps your server secure by not allowing additional configuration since only someone with root permission can alter your server and site's settings.

Should I be worried about Log4j vulnerability?

Many software use logs for development and security purposes. Log4j is a part of this logging process. Hence, it is highly possible that the vulnerability could affect millions and millions of victims. Individuals as well as organisations are affected by this.

Does NGINX conflict with Apache?

Conclusion. The most important thing we take from this simple configuration is that Apache and Nginx can and do work together. A problem may arise when they both listen to the same ports. By giving them different ports to listen to, your system functionality is assured.

How serious is Log4j vulnerability?

The Log4j issue is a type of remote code execution vulnerability, and a very serious one that allows an attacker to drop malware or ransomware on a target system. This can, in turn, lead to complete compromise of the network and the theft of sensitive information as well as the possibility of sabotage.

Is NGINX server secure?

nginx is built to be stable and secure, but it will only be as secure as the user who configures it. Once nginx is built and installed, configuring the server to be as minimal as possible is important.

What causes an NGINX error?

What does NGINX 502 Bad Gateway mean? 502 Bad Gateway means that the server you are accessing receives an error from another server. This happens when one server acts as a proxy to receive information from another server. When connecting to another server, it returns an error.

What happens if NGINX goes down?

If one of the load balancing instances is down, requests will still get routed to that server, because nginx has no way of knowing upstream instance is failing. You'll get 502 Bad Gateway for one out of three requests. To avoid down servers getting requests, you can use nginx's health checks.

Is NGINX single point of failure?

HA Architecture for Web Applications

Configuring NGINX Plus into an HA cluster provides further resiliency for applications, and eliminates any single points of failure in the application stack.

Does Netflix use NGINX?

A Netflix OCA serves large media files using NGINX via the asynchronous sendfile() system call.

Is NGINX better than Tomcat?

Here Nginx is much better than Apache Tomcat. It can handle multiple requests for static and dynamic content simultaneously using as little memory as possible.

Does NGINX have a firewall?

The NGINX ModSecurity Web Application Firewall (WAF) protects applications against sophisticated Layer 7 attacks that might otherwise lead to systems being taken over by attackers, loss of sensitive data, and downtime. The NGINX ModSecurity WAF is based on the widely used ModSecurity open source software.

Is Nginx 1.20 stable?

How much RAM do I need for nginx?

The following minimum hardware specifications are required for each node running NGINX Controller: RAM: 8 GB RAM. CPU: 8-Core CPU @ 2.40 GHz or similar.

What is $2 in nginx?

In our example, $2 is test. last – This flag will make sure to stop the search of rewrite directive in the current location or block and use the changed URI (i.e rewritten URI) and look for new location for any further rewrite directives that matches. *$ – This indicates the extension in the original URL.