News and blog
NXLog main page
  • Products
    NXLog Platform
    Log collection
    Log management and analytics
    Log storage
    NXLog Community Edition
    Integrations
    Professional Services
  • Solutions
    Use cases
    Specific OS support
    SCADA/ICS
    Windows event log
    DNS logging
    MacOS logging
    Solutions by industry
    Financial Services
    Government & Education
    Entertainment & Gambling
    Telecommunications
    Medical & Healthcare
    Military & Defense
    Law Firms & Legal Counsel
    Industrial & Manufacturing
  • Plans
  • Partners
    Find a Reseller
    Partner Program
  • Resources
    Documentation
    Blog
    White papers
    Videos
    Webinars
    Case Studies
    Community Program
    Community Forum
  • About
    Company
    Careers
  • Support
    Support portals
    Contact us

NXLog Platform
Log collection
Log management and analytics
Log storage
NXLog Community Edition
Integrations
Professional Services

Use Cases
Specific OS support
SCADA/ICS
Windows event log
DNS logging
MacOS logging
Solutions by industry
Financial Services
Government & Education
Entertainment & Gambling
Telecommunications
Medical & Healthcare
Military & Defense
Law Firms & Legal Counsel
Industrial & Manufacturing


Find a Reseller
Partner Program

Documentation
Blog
White papers
Videos
Webinars
Case Studies
Community Program
Community Forum

Company
Careers

Support portals
Contact us
Let's Talk Start free
NXLog search
  • Loading...
Let's Talk Start free
February 3, 2022 security

How to prevent and detect Log4j vulnerabilities

By John Kirch

Share
ALL SIEM STRATEGY SECURITY ANNOUNCEMENT DEPLOYMENT COMPLIANCE COMPARISON RSS

The Apache Log4j vulnerability has attracted a lot of media attention as a result of recent security incidents that were reported by some organizations using versions 2.0-beta9 through 2.14.1. This security flaw has the potential to affect thousands of applications since some of the world’s largest databases rely on Log4j.

Because so many organizations are affected, cybercriminals are actively exploiting this well-known vulnerability.

Why is this so dangerous? In addition to the threat of malware and ransomware, hackers can also perform remote code execution due to the Log4j vulnerability. For those who have not applied patches to their Log4j-dependent third-party solutions, hackers can easily use this vulnerability to exploit applications and to take control of servers and other devices on corporate networks.

As headlines in recent weeks have shown, it’s reasonable to assume that large organizations could have hundreds of vulnerable applications running across thousands of devices company-wide.

What is Apache Log4j vulnerability?

The Apache Log4j library is extremely popular. Almost all JAVA-based enterprise software depends on it. Consequently, Log4j is the de facto standard JAVA logging API that developers use to enrich their server applications with logging capabilities.

One reason that an organization might use Log4j is to help troubleshoot potential security incidents. For example, if someone attempted to log in using incorrect credentials, Log4j could record information about the event. In other words, Log4j holds sensitive information that malicious attackers can easily exploit.

The Log4j vulnerability CVE-2021-44228 impacts Log4j 2 versions from 2.0-beta9 to 2.14.1. Apache announced a series of somewhat related vulnerabilities: CVE-2021-45046, which can lead to DDOS attacks, and CVE-2021-45105, an infinite recursion bug.

The Apache Software Foundation has already released versions 2.15.0, 2.16.0, and 2.17.0 to patch the vulnerability. If you’re running one of the affected Log4j versions, it’s crucial that you patch your system immediately.

Since Log4j vulnerabilities affect the core function of the program, there are many ways that cybercriminals can exploit them.

On vulnerable systems, attackers not only have access to all data, they can also run any code they want. All capabilites that a comprised machine has can then be exploited by the attacker. This opens the door for malicious code injections, ransomware attacks, and DDOS attacks.

The impact of Log4j vulnerabilities

Researchers have observed attempted exploits of Log4j vulnerabilities on over 44% of corporate networks across the globe. But the bad news doesn’t stop there.

While most attackers taking advantage of the current Apache vulnerabilities seem to be solo operators, there is increasing evidence that sophisticated hackers are working quietly to follow through with large-scale attacks. Cybercriminals will not execute these attacks until months or even years from now after they have gained a thorough understanding of your security ecosystem.

First, attackers create a foothold within a network where they quietly spy on business activities, security protocols, and even high-level users. Then, after finding the most effective way to exploit an organization, they develop a plan and execute their devastating attack.

Cyberattacks can mean catastrophe for unsuspecting companies. In addition to data loss, disruptions can damage their reputation and have other costly effects. For example, IT downtime costs $5,600 per minute for most companies.

As far as cybersecurity trends are concerned, data breaches are increasing in popularity, scope, and cost. With 2021 surpassing 2020’s unprecedented number of data breaches, researchers expect 2022 to bring even more cyberattacks.

How to prevent and detect Log4j vulnerabilities

Although the impacts of Log4j vulnerabilities are far-reaching, there are steps you can take to prevent and detect Log4j vulnerabilities on your network. Don’t let rising ransomware statistics fool you - data breaches are not inevitable. Research shows that 97% of cyberattacks could be prevented by having the right tools and protocols in place.

Here are five things that you can do to prevent and detect Log4j vulnerabilities:

Upgrade and patch your systems

First and foremost, if your organization has deployed any of the affected versions of Apache, it’s crucial to upgrade your software to the latest version.

Apache recommends that Java 6 users upgrade to Log4j 2.3.2 and Java 7 users upgrade to 2.12.4. Java 8 and later users should upgrade to 2.17.1. They also recommend that you confirm that the JDBC Appender is only configured to use Java protocols.

Design a secure network ecosystem

Next, protect your network from future attacks and from dormant attackers who are lying in wait on the network for the best moment to attack. Many large organizations have in-house developers who design cybersecurity ecosystems for their networks.

If your organization lacks in-house support, you can expect to pay at least $60 an hour for a freelance developer who can create firewall rules to protect your servers and implement the following prevention tips as well.

Audit security events

New cybersecurity standards require that organizations maintain accurate logs to help maintain security and for investigating incidents. Collecting detailed information about security-related events makes it easier to identify an attack and improve cybersecurity policies over time.

Many operating systems already have a native auditing system in place that just needs to be configured and enabled. Store security audit logs in a safe place, like a remote system or a cloud-based service, so they can be referenced for future investigations and audits, and remain hidden from prying eyes.

Implement continuous vulnerability monitoring

Continuous monitoring provides a 24/7 view into your network operations, so that the IT team is notified as soon as a vulnerability or potential threat is detected. Most continuous monitoring software allows your teams to determine rules, frequency, and other parameters to tailor the tool to your security needs.

Continuous vulnerability monitoring allows your cybersecurity team to focus on the most dangerous threats before following up with additional flags. It’s easier for criminals to slide into your network unnoticed as they become savvier, but continuous monitoring helps eliminate even the most insidious of threats.

Centralize log data

Log aggregation is a process to standardize and consolidate log data from systems distributed across your network into one central server. Instead of wasting time manually collecting hundreds of log files from individual hosts, log aggregation collects all log sources it receives over the network, in real time, from various hosts, and merges them into streams, ususally by log source type. These streams are then forwarded to a SIEM or log analytics system, that ingests them and analyzes them in record time.

Centralized log data makes it easier to pinpoint security incidents so that teams can deploy the right solutions before it’s too late. Log aggregation also gives companies a more streamlined way to work with large amounts of data, so that it can more easily filter and search for specfic, high-quality security events. Automated detection tools are other helpful security features that are often part of log aggregation.

Final thoughts

Remember that mitigating security vulnerabilities is an ongoing project that never sleeps. Make sure that you have the correct tools in place to ensure your organization will be able to patch vulnerabilities, perform audits, aggregate logs, and monitor your network for unauthorized activity.

Disclaimer

While we endeavor to keep the information in this topic up to date and correct, NXLog makes no representations or warranties of any kind, express or implied about the completeness, accuracy, reliability, suitability, or availability of the content represented here.

Last revision: 10 February 2022

GET STARTED TODAY:
CONTACT US Our experts are happy to help REQUEST A FREE TRIAL Give NXLog Enterprise Edition a try GET PRICING Request a quote
  • cybersecurity
  • log4j
Share

Facebook Twitter LinkedIn Reddit Mail
Related Posts

Using Raijin Database Engine to aggregate and analyze Windows security events
11 minutes | July 29, 2021
DNS Log Collection on Windows
8 minutes | May 28, 2020
Making the most of Windows Event Forwarding for centralized log collection
6 minutes | December 17, 2018

Stay connected:

Sign up

Keep up to date with our monthly digest of articles.

By clicking singing up, I agree to the use of my personal data in accordance with NXLog Privacy Policy.

Featured posts

Announcing NXLog Platform 1.6
April 22, 2025
Announcing NXLog Platform 1.5
February 27, 2025
Announcing NXLog Platform 1.4
December 20, 2024
NXLog redefines log management for the digital age
December 19, 2024
2024 and NXLog - a review
December 19, 2024
Announcing NXLog Platform 1.3
October 25, 2024
NXLog redefines the market with the launch of NXLog Platform: a new centralized log management solution
September 24, 2024
Welcome to the future of log management with NXLog Platform
August 28, 2024
Announcing NXLog Enterprise Edition 5.11
June 20, 2024
Raijin announces release of version 2.1
May 31, 2024
Ingesting log data from Debian UFW to Loki and Grafana
May 21, 2024
Announcing NXLog Enterprise Edition 6.3
May 13, 2024
Raijin announces release of version 2.0
March 14, 2024
NXLog Enterprise Edition on Submarines
March 11, 2024
The evolution of event logging: from clay tablets to Taylor Swift
February 6, 2024
Migrate to NXLog Enterprise Edition 6 for our best ever log collection experience
February 2, 2024
Raijin announces release of version 1.5
January 26, 2024
2023 and NXLog - a review
December 22, 2023
Announcing NXLog Enterprise Edition 5.10
December 21, 2023
Raijin announces release of version 1.4
December 12, 2023
Announcing NXLog Enterprise Edition 6.2
December 4, 2023
Announcing NXLog Manager 5.7
November 3, 2023
Announcing NXLog Enterprise Edition 6.1
October 20, 2023
Raijin announces release of version 1.3
October 6, 2023
Upgrading from NXLog Enterprise Edition 5 to NXLog Enterprise Edition 6
September 11, 2023
Announcing NXLog Enterprise Edition 6.0
September 11, 2023
The cybersecurity challenges of modern aviation systems
September 8, 2023
Raijin announces release of version 1.2
August 11, 2023
The Sarbanes-Oxley (SOX) Act and security observability
August 9, 2023
Log Management and PCI DSS 4.0 compliance
August 2, 2023
Detect threats using NXLog and Sigma
July 27, 2023
HIPAA compliance logging requirements
July 19, 2023
Announcing NXLog Enterprise Edition 5.9
June 20, 2023
Industrial cybersecurity - The facts
June 8, 2023
Raijin announces release of version 1.1
May 30, 2023
CISO starter pack - Security Policy
May 2, 2023
Announcing NXLog Enterprise Edition 5.8
April 24, 2023
CISO starter pack - Log collection fundamentals
April 3, 2023
Raijin announces release of version 1.0
March 9, 2023
Avoid vendor lock-in and declare SIEM independence
February 13, 2023
Announcing NXLog Enterprise Edition 5.7
January 20, 2023
NXLog - 2022 in review
December 22, 2022
Need to replace syslog-ng? Changing to NXLog is easier than you think
November 23, 2022
The EU's response to cyberwarfare
November 22, 2022
Looking beyond Cybersecurity Awareness Month
November 8, 2022
GDPR compliance and log data
September 23, 2022
NXLog in an industrial control security context
August 10, 2022
Raijin vs Elasticsearch
August 9, 2022
NXLog provides native support for Google Chronicle
May 11, 2022
Aggregating macOS logs for SIEM systems
February 17, 2022
How a centralized log collection tool can help your SIEM solutions
April 1, 2020

Categories

  • SIEM
  • STRATEGY
  • SECURITY
  • ANNOUNCEMENT
  • DEPLOYMENT
  • COMPLIANCE
  • COMPARISON
logo

Subscribe to our newsletter to get the latest updates, news, and products releases. 

© Copyright 2024 NXLog FZE.

Privacy Policy. General Terms of Use

Follow us

  • Product
  • NXLog Platform 
  • Log collection
  • Log management and analysis
  • Log storage
  • Integration
  • Professional Services
  • Plans
  • Resources
  • Documentation
  • Blog
  • White papers
  • Videos
  • Webinars
  • Case studies
  • Community Program
  • Community forum
  • Support
  • Getting started guide
  • Support portals
  • About NXLog
  • About us
  • Careers
  • Find a reseller
  • Partner program
  • Contact us