Splunk Security Advisory for Apache Log4j (CVE-2021-44228, CVE-2021-45046 and others) (2022)

Updated 8:30 am PT, 1/7/22

On December 10, a critical remote code execution vulnerability impacting at least Apache Log4j 2 (versions 2.0 to 2.14.1) wasannounced by Apache. This vulnerability is designated by Mitre as CVE-2021-44228 with the highest severity rating of 10.0. The vulnerability is also known as Log4Shell by security researchers. Log4j 2 is a commonly used open source third party Java logging library used in software applications and services. If exploited, this vulnerability allows adversaries to potentially take full control of the impacted system.

On December 14, Apache announced a second vulnerability impacting Log4j (CVE-2021-45046), found in Log4j version 2.1.0. On December 17, this vulnerability was upgraded by MITRE to a severity rating of 9.0 (Critical).

Splunk is focused on the fastest possible remediations for CVE-2021-44228 and CVE-2021-45046. Release candidates to address both vulnerabilities are in development for affected products, inclusive of the products listed below. Please return to this posting for the most up to date information.

Splunk is currently reviewing our supported products for impact and evaluating options for remediation and/or or mitigation. This includes implementing additional proactive measures within Splunk's internal environment and Splunkbase to address the dynamic threats related to CVE-2021-44228 and CVE-2021-45046. The below tables contain our most up-to-date guidance on our products. These products are tracked separately across On Prem and Cloud products.

Splunk has not observed successful exploitation of the Log4Shell vulnerability within Splunk Cloud. Splunk has also not observed successful exploitation of the Log4Shell vulnerability within our internal environment.Splunk does not have visibility into On-Prem deployments. Please see our blogs for guidance on detecting and protecting your deployment from Log4Shell:

  • Detecting Log4j 2 RCE Using Splunk
  • Detecting Log4j Vulnerability Continued
  • Simulating, Detecting, and Responding to Log4Shell with Splunk

Please return to this posting for the most up to date information. Current customers can file support tickets through standard channels for specific guidance.

Supplemental Security Advisory for Splunk Apps

A supplemental security advisory for Splunk Apps was published on December 14 and is being updated on an ongoing basis.

Additional Guidance for CVE-2021-45105 and CVE-2021-44832

Splunk also reviewed a Denial of Service Vulnerability (CVE-2021-45105) found in Log4j version 2.16.0. Apache has designated this vulnerability a severity rating of 7.5 (High). Per Apache’s advisory, specific non-default configuration parameters need to be present to exploit this vulnerability. Splunk has evaluated where these configuration parameters may exist within our product portfolio, and we have updated the table below accordingly.

Splunk is additionally reviewing a Remote Code Execution Vulnerability (CVE-2021-44832) found in Log4j version 2.17.0. Apache has designated this vulnerability a severity rating of 6.6 (Moderate). Per Apache’s advisory, permission must be granted to the underlying configuration files, and a malicious configuration needs to be created, to exploit this vulnerability.

Unless CVE-2021-45105 or CVE-2021-44832 increase in severity, Splunk will address these vulnerabilities as part of the next regular maintenance release of each affected product. Customers also have the option to remove Log4j Version 2 from Splunk Enterprise out of an abundance of caution.

Summary of Impact for Splunk Enterprise and Splunk Cloud

Core Splunk Enterprise functionality does not use Log4j version 2 and is not impacted. If Data Fabric Search (DFS) is used, there is an impact because this product feature leverages Log4j. If this feature is not used, there is no active attack vector related to CVE-2021-44228 or CVE-2021-45046.Guidance for determining if you are using DFS appears in the "Removing Log4j version 2 from Splunk Enterprise" section below.

All recent non-Windows versions of Splunk Enterprise include Log4j version 2 for the DFS feature. Windows versions of Splunk Enterprise do not include Log4j version 2. Customers may follow the guidance in the “Removing Log4j version 2 from Splunk Enterprise” section below to remove these packages out of an abundance of caution. Official patches to upgrade the Log4j packages and mitigate the vulnerabilities in all usage scenarios are available and linked in the table below for version 8.1 and 8.2. These patches are the preferred method for addressing CVE-2021-44228 in Splunk Enterprise. Patches to address CVE-2021-45046 are forthcoming.

Splunk Cloud is not impacted by CVE-2021-44228 or CVE-2021-45046. For potential impact on Splunk supported applications installed on Splunk Enterprise or Splunk Cloud, see the tables below.

Impacted Products

These products are known to be impacted by CVE-2021-44228 and CVE-2021-45046. Unless explicitly stated, patches are cumulative to address both CVE-2021-44228 and CVE-2021-45046. The latest available update for an affected product should be used.

ProductCloud/On-PremImpacted VersionsFixed VersionWorkaround

Splunk Add-On for Java Management Extensions

(App ID 2647)

Both5.2.0 and older

CVE-2021-44228: 5.2.1

(Video) Log4J Security Vulnerability: CVE-2021-44228 (Log4Shell) - in 7 minutes or less (PATCH NOW!)

CVE-2021-45046: 5.2.2

CVE-2021-45105: not applicable due to configuration parameters


Splunk Add-On for JBoss

(App ID 2954)

Both3.0.0 and older

CVE-2021-44228: 3.0.1

CVE-2021-45046: 3.0.2

CVE-2021-45105: not applicable due to configuration parameters


Splunk Add-On for Tomcat

(App ID 2911)

Both3.0.0 and older

CVE-2021-44228: 3.0.1

CVE-2021-45046: 3.0.2

CVE-2021-45105: not applicable due to configuration parameters

Data Stream ProcessorOn-PremDSP 1.0.x, DSP 1.1.x, DSP 1.2.x

Patch and Procedure emailed to customers with active DSP licenses. Version 1.0.0 and 1.0.1 are out of support and will not receive a patch. Customers on supported versions (> 1.1.0) should patch to the following versions:

CVE-2021-44228: 1.2.1-patch02, 1.2.2-patch02

CVE-2021-45046: 1.2.1-patch02, 1.2.2-patch02

CVE-2021-45105: not applicable due to configuration parameters


IT Essentials Work

(App ID 5403)

(Video) Apache Log4j2 Vulnerability | Remediation | CVE-2021-4428 | CVE-2021-45046

Both4.11, 4.10.x (Cloud only), 4.9.x

CVE-2021-44228: 4.11.1, 4.10.3, 4.9.5

CVE-2021-45046: 4.11.2, 4.10.4, 4.9.6, 4.7.4

CVE-2021-45105: not applicable due to configuration parameters

See Splunk Docs

IT Service Intelligence (ITSI)

(App ID 1841)

Both4.11.0, 4.10.x (Cloud only), 4.9.x, 4.8.x (Cloud only), 4.7.x, 4.6.x, 4.5.x

CVE-2021-44228: 4.11.1, 4.10.3, 4.9.5, 4.7.3

CVE-2021-45046: 4.11.2, 4.10.4, 4.9.6, 4.7.4

CVE-2021-45105: not applicable due to configuration parameters

See Splunk Docs
Splunk Connect for KafkaOn-PremAll versions prior to 2.0.4

CVE-2021-44228: 2.0.4

CVE-2021-45046: 2.0.5

CVE-2021-45105: 2.0.6

Splunk Enterprise (including instance types like Heavy Forwarders)On-PremAll supported non-Windows versions of 8.1.x and 8.2.x only if DFS is used. See Removing Log4j from Splunk Enterprise below for guidance on unsupported versions.


CVE-2021-45046:, 8.2.4

CVE-2021-45105: not applicable due to configuration parameters

See Removing Log4j from Splunk Enterprise section below
Splunk Enterprise Amazon Machine Image (AMI)On-PremSee Splunk EnterpriseCVE-2021-44228 and CVE-2021-45046:,
Splunk Enterprise Docker ContainerOn-PremSee Splunk Enterprise

CVE-2021-44228: latest, edge, 8.1,, 8.2,

CVE-2021-45046:latest, edge, 8.1,, 8.2,

CVE-2021-45105: not applicable due to configuration parameters

Splunk Logging Library for JavaOn-Prem1.11.0 and older

CVE-2021-44228: 1.11.1

(Video) Apache Log4j VxRail Manager Log4Shell Workaround - CVE-2021-44228 / 45046 / 4104

CVE-2021-45046: 1.11.2

CVE-2021-45105: 1.11.3


Splunk OVA for VMWare

(App ID 3216)

On-Prem4.0.3 and olderPendingNone

Splunk OVA for VMWare Metrics

(App ID 5096)

On-Prem4.2.1 and olderPendingNone

Splunk VMWare OVA for ITSI

(App ID 4760)

On-Prem1.1.1 and older

CVE-2021-44228: TBD

CVE-2021-45046: TBD

Splunk On-call / VictorOpsCloudCurrent

CVE-2021-44228: Fixed 12/15

CVE-2021-45046: Fixed 12/20

Splunk Real User MonitoringCloudCurrent

CVE-2021-44228: Fixed 12/13

CVE-2021-45046:Fixed 12/20

Splunk Application Performance MonitoringCloudCurrent

CVE-2021-44228: Fixed 12/13

CVE-2021-45046:Fixed 12/20

Splunk Infrastructure MonitoringCloudCurrent

CVE-2021-44228: Fixed 12/13

CVE-2021-45046:Fixed 12/20

(Video) Apache Log4j DPA Security Update - CVE-2021-44228

Splunk Log ObserverCloudCurrent

CVE-2021-44228: Fixed 12/16

CVE-2021-45046:Fixed 12/20

Splunk SyntheticsCloudCurrent

CVE-2021-44228: Fixed 12/10

CVE-2021-45046:Fixed 12/20

Splunk UBA OVA SoftwareOn-Prem5.0.3a, 5.0.0See Removing Log4j from Splunk User Behavior Analytics section below

Products Confirmed Not Vulnerable

Investigation has concluded that these products are not impacted by CVE-2021-44228 or CVE-2021-45046.

  • Admin Config Service
  • Analytics Workspace
  • Behavior Analytics
  • Dashboard Studio
  • Developer Tools: AppInspect
  • Enterprise Security
  • Infosec App for Splunk
  • Intelligence Management (TruSTAR)
  • KV Service
  • Mission Control
  • MLTK
  • Operator for Kubernetes
  • Security Analytics for AWS
  • SignalFx Smart Agent
  • SOAR Cloud (Phantom)
  • SOAR (On-Premises)
  • SOAR Cloud On-Prem Automation Broker
  • Splunk Augmented Reality
  • Splunk Cloud Data Manager (SCDM)
  • Splunk Connect for Kubernetes
  • Splunk Connect for SNMP
  • Splunk Connect for Syslog
  • Splunk DB Connect
  • Splunk Enterprise Cloud
  • Splunk Log Observer
  • Splunk Mint
  • Splunk Mobile
  • Splunk Network Performance Monitoring
  • Splunk Open Telemetry Distributions
  • Splunk Profiling
  • Splunk Secure Gateway (Spacebridge)
  • Splunk Security Essentials
  • Splunk TV
  • Splunk Universal Forwarder (UF)
  • Splunk User Behavior Analytics (UBA)
  • Stream Processor Service

Removing Log4j Version 2 from Splunk Enterprise

The guidance in this section is intended to be used in the case that Splunk Enterprise cannot be upgraded using the official patches for version 8.1 and 8.2. The guidance below will help you remove jar files associated with both vulnerabilities (CVE-2021-42288 and CVE-2021-45046).

If the Splunk Enterprise instance does not leverage DFS, the presence of those libraries does not introduce an active attack vector. Out of an abundance of caution, you may remove the unused jar files and directories from your Splunk Enterprise instances in the following paths:

  • $SPLUNK_HOME/bin/jars/vendors/spark
  • $SPLUNK_HOME/bin/jars/vendors/libs/splunk-library-javalogging-*.jar
  • $SPLUNK_HOME/bin/jars/thirdparty/hive*
  • $SPLUNK_HOME/etc/apps/splunk_archiver/java-bin/jars/*

Upon removal of these jar files, an administrator may see errors at Splunk startup pertaining to file integrity, specific to these jar files. These are expected as you are removing these unused jar files as a workaround. These errors may be ignored.

Jar files matching the same filename of the files found in the directories above, but found in other directories on your Splunk instances are likely from normal Splunk operation (e.g. search head bundle replication) and can be safely deleted. If any jar files return in the splunk_archiver app, disabling the default Bucket Copy Trigger search in that app will stop this behavior from happening.

*Since a Splunk Heavyweight Forwarder (HWF) is a full-instance copy of Splunk Enterprise with forwarding enabled, the above mitigation may also be applied to HWF instances.

Determining if DFS is in use

To determine if Distributed Fabric Search is in use, you may run the following query from a Splunk search head:

| history | search search=*dfsjob* | rex field=search "(?P<dfs_cmd>\|\s*dfsjob)" | search dfs_cmd=* and search!=*eval* | where len(dfs_cmd) > 0

If the above search returns results, then DFS is enabled and searches have been run using the capability. You may also look for the parameter "disabled=false" in server.conf to determine if DFS is enabled.

Determining if Hadoop Data Roll is in use

Although Hadoop Data Roll (archiver) functionality does notintroduce an active attack vector, users who do not use this functionality may choose to remove the Log4j files out of an abundance of caution. To determine if this feature is in use, you may run the following query from a Splunk search head:

index=_internal source=*/splunk_archiver.log| rex field=_raw "json=\"(?P<json>.*)\"" | chart values(json)

If the above search returns the following, then Hadoop Data Roll is NOT in use:

Splunk Security Advisory for Apache Log4j (CVE-2021-44228, CVE-2021-45046 and others) (1)

Unsupported Versions of Splunk Enterprise

Only the DFS functionality of unsupported versions of Splunk Enterprise that include DFS (the 8.0 release and later) is affected by CVE-2021-44228 and CVE-2021-45046. The above removal guidance can be applied to those versions as well. Splunk has provided an official patch for supported versions8.1.7.1 and

Removing Log4j Version 2 from Splunk User Behavior Analytics

Versions of UBA prior to 5.0 leveraged Apache Storm, which embeds Log4j. The presence of those libraries does not introduce an active attack vector. Out of an abundance of caution, you may follow the procedure here to completely remove Apache Storm and the Log4j libraries from your UBA AMI, OVA, and bare-metal installs.


Change Log

  • 2022-01-06: Updated advisory to include instructions on removing Apache Storm from older versions of Splunk User Behavior Analytics.
  • 2021-12-30: Updated advisory to acknowledge the multiple vulnerabilities that have been identified since December 10. Added CVE-2021-44832 MITRE designation in References section.
  • 2021-12-23: UpdatedSplunk Enterprise - CVE-2021-45046:, the addition of8.2.4.
  • 2021-12-21: Updated fixed versions for Splunk Enterprise Amazon AMI for CVE-2021-40546. Updated fixed versions for Data Stream Processor. Added fix information for CVE-2021-40546 for the following products: Splunk On-call / VictorOps; Splunk Real User Monitoring; Splunk Application Performance Monitoring; Splunk Infrastructure Monitoring; Splunk Log Observer; Splunk Synthetics. Added fixed version for Splunk Connect for Kafka for CVE-2021-45105.Added SOAR Cloud On-Prem Automation Broker to list of products confirmed not vulnerable
  • 2021-12-20: Updated fixed versions of Splunk Enterprise Docker Container for CVE-2021-44228 and CVE-2021-45046. Updated list of products not vulnerable to CVE-2021-45105.
  • 2021-12-18: Updated advisory to reflect Splunk Enterprise, IT Service Intelligence, IT Essentials Work, and Data Stream Processor are not vulnerable to CVE-2021-45105
  • 2021-12-18: Added additional guidance for CVE-2021-45105
  • 2021-12-18: Added fix versions for Splunk Enterprise, Splunk Enterprise AMI, and Splunk Enterprise Docker images addressing CVE-2021-45046
  • 2021-12-17: Updated advisory to reflect the MITRE-upgraded severity rating of CVE-2021-45046 to 9.0 (Critical). Updated Splunk’s combined approach to vulnerabilities CVE-2021-44228 and CVE-2021-45046. Added link to new Splunk blog - Simulating, Detecting and Responding to Log4Shell with Splunk.
  • 2021-12-17: Updated advisory with additional products confirmed vulnerable: Splunk VMWare OVA for ITSI and Splunk UBA OVA Software. Added additional products confirmed not vulnerable: Infosec App for Splunk and Splunk Security Essentials. Added fixed version for Splunk Enterprise AMI
  • 2021-12-16: Moved Stream Processor Service from Impacted to Not Vulnerable list. Note that while SPS was patched on 12/16 to protect against CVE-2021-44228, this service was never vulnerable to either CVE-2021-44228 or CVE-2021-45026 due to the specific service implementation.
  • 2021-12-16: Clarified that no workarounds will be published for versions already patched. Updated Splunk Application Performance Monitoring, Splunk Infrastructure Monitoring, Splunk On-Call/VictorOps, Splunk Real User Monitoring, and Splunk Synthetics to note a previous (now patched) vulnerability to CVE-2021-44228, and pending patches for CVE-2021-45046.
  • 2021-12-16: Updated with additional products confirmed vulnerable: Splunk OVA for VMWare and Splunk OVA for VMWare Metrics. Added link to Splunk.com Log4Shell information hub in References section
  • 2021-12-16: Added fix versions for Stream Processor Service and Splunk Logging Library for Java
  • 2021-12-15: Clarified the status of Splunk deployments within our corporate or customer’s environments with regard to Log4Shell. Added App IDs to impacted products.
  • 2021-12-15: Added fix versions for ITSI and IT Essentials Work. Updated impacted versions of Splunk Logging Library for Java
  • 2021-12-14: Added link to supplemental security advisory for Splunk Apps and updated fixed versions of IT Essentials Work. Linked to Splunk docs in workaround column for IT Essentials and ITSI
  • 2021-12:14: Added guidance for CVE-2021-45046. Updated impacted versions of Splunk Connect for Kafka. Added links to second Log4Shell Splunk blog post and CVE-2021-45046 MITRE designation in References section
  • 2021-12-14: Clarified official names of impacted add-ons. Added fix version for Splunk Enterprise AWS AMI, Splunk Add-on for JBoss, Splunk Add-on for Tomcat and Splunk Add-on for Java Management Extensions. Added additional fix versions for ITSI and Splunk Essentials Work
  • 2021-12-13: Added link to patch for Splunk Enterprise and additional information about mitigating vulnerabilities in earlier Splunk Enterprise versions by removing Log4j jar files
  • 2021-12-13: Added fix version 4.9.5 for ITSI and IT Essentials Work. Added link to patch for Splunk Enterprise
  • 2021-12-13: Added fix version 4.10.3 as available for ITSI and IT Essentials Work. Corrected impacted version numbers for Java Management Extensions Add-on
  • 2021-12-13: Updated advisory to remove Hadoop (Hunk) integration as a risk vector for Splunk Enterprise. Added fix version 4.11.1 as available for ITSI. Confirmed vulnerability in product IT Essentials Work and added fix version 4.11.1
  • 2021-12-12: Updated advisory with additional products confirmed not vulnerable including Splunk SDKs. Confirmed vulnerability in product Splunk Logging Library for Java. Updated timeline for fixed version available for ITSI. Added in the expected release of Splunk Enterprise
  • 2021-12-12: Removed advisory for DB Connect (was never impacted). Added official product names for UF, UBA, Phantom (On-Premises), HWF. Updated advisory with additional products confirmed not vulnerable including Splunk Connect for Kubernetes
  • 2021-12-12: Updated advisory with additional products confirmed not vulnerable including Splunk Mint, Splunk Connect for SNMP, SignalFX Smart Agent and Splunk Forwarders (UF/HWF). Confirmed vulnerability in products Splunk DB Connect, Splunk Connect for Kafka, Add-On: Tomcat, Add-On: Java Management Extension and Add-On: JBoss
  • 2021-12-11: Updated advisory with additional products confirmed not vulnerable including Admin Config Service, Behavioral Analytics, Data Manager, Enterprise Security, Intelligence Management (TruSTAR), KV Service, Mission Control, Phantom (On Premises), Security Analytics for AWS, SOAR Cloud (Phantom), Splunk Connect for Syslog, Splunk Mobile, Splunk OpenTelemetry Distributions, Splunk Operator for Kubernetes, Splunk Secure Gateway (Spacebridge) and Splunk TV
  • 2021-12-11: Initial Security Advisory


Does Splunk have Log4j vulnerability? ›

Splunk is additionally reviewing a Remote Code Execution Vulnerability (CVE-2021-44832) found in Log4j version 2.17. 0. Apache has designated this vulnerability a severity rating of 6.6 (Moderate).

What 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.

What is Splunk security? ›

Splunk Enterprise Security (ES) is a data-centric, modern security information and event management (SIEM) solution that delivers data-driven insights for full breadth visibility into your security posture so you can protect your business and mitigate risk at scale.

Can you just delete Log4j jar file? ›

Simply removing the jar files will break logging via log4j 2, but this is probably the weakest remediation technique as it is intrusive and prone to error.

How do you know if we are using Log4j? ›

Check Log4j Version

For that, we need to make use of the “apt list” instruction on the shell along with the name of a library as “liblog4j2-java” as shown in the image below. The output is showing “Listing… Done”, and after that, it is showing the installed version of Log4j2 in our system i.e., version “2.17. 1-0.20.

How do I know if I have Log4j? ›

Navigate into the "META-INF" sub-directory and open the file "MANIFEST. MF" in a text editor. Find the line starting with "Implementation-Version", this is the Log4j version.

How bad is the Log4j vulnerability? ›

Log4j is used worldwide across software applications and online services, and the vulnerability requires very little expertise to exploit. This makes Log4shell potentially the most severe computer vulnerability in years.

What software is affected by Log4j? ›

Top 10 Impacted Vendors
  • Adobe. Adobe found that ColdFusion 2021 is subject to Log4Shell and released a security update to address the problem on December 14. ...
  • Cisco. ...
  • F-Secure. ...
  • Fortinet. ...
  • FortiGuard. ...
  • IBM. ...
  • Okta. ...
  • VMware.
Feb 15, 2022

What is Log4j in simple words? ›

What Is Log4j? Log4j is a Java library for logging error messages in enterprise applications, which includes custom applications, networks, and many cloud computing services. In addition, it is used by a large percentage of the Java programs developed in the last decade for both server and client applications.

How is Splunk used in cybersecurity? ›

Splunk allows security teams to analyze large data sets, detect malicious network activity, and respond to threats across environments quickly and more accurately than legacy SIEM systems.

Is Splunk a SIEM or soar? ›

Splunk SOAR automates alert triage, response, and manual repetitive tasks in seconds, instead of minutes or hours if performed manually.

What is the main use of Splunk? ›

Splunk is used for monitoring and searching through big data. It indexes and correlates information in a container that makes it searchable, and makes it possible to generate alerts, reports and visualizations.

Why did Log4j happen? ›

The design flaw that set the internet on fire

Essentially, this vulnerability is the combination of a design flaw and bad habits, according to the experts I spoke to for this post. The cybersecurity industry has dubbed this exploit Log4J, naming it after the Java logging framework that is the source of the problem.

Who uses Log4j? ›

Log4j is widely used across consumer and enterprise systems, in everything from iCloud, Steam and Minecraft, to Fortinet, IBM, Microsoft, Red Hat, Salesforce, Siemens, and other vendors. Dozens of vendors have already released patches and security updates.

What happens if I delete Log4j? ›

Removing the Log4j related files does not affect further backup or recovery operations. BDRSuite has also developed a utility that identifies the log4j vulnerability in its installation location then removes the vulnerable file.

Where is Apache Log4j located? ›

Locate the log4j. xml file under the oarm/WEB-INF/classes/ directory. Update the log output path for each appender.

How do I scan for Log4j vulnerability? ›

How to Detect Log4j Affected Programs and Fix the Issues
  1. #1. Update Your Log4j Version. Updating your current Log4j version to Log 4j 2.17. ...
  2. #2. Use the Latest Firewalls and Security Systems. ...
  3. #3. Implement MFA. ...
  4. #4. Change System Properties. ...
  5. #5. Remove JNDI. ...
  6. #6. Talk to Your Vendors. ...
  7. #7. Use a Log4j Vulnerability Scanner.
May 10, 2022

Where is Apache Log4j installed? ›

The default logging properties file log4j. xml is installed in the lib folder, with the . jar file listed in this table.

Is Log4j used on Windows? ›

Just ahead of New Year's Day, Microsoft rolled out a new Log4j dashboard for threat and vulnerability management in the Microsoft 365 Defender portal for Windows 10 and 11, Windows Server, and Linux systems. This system aims to help customers find and fix files, software and devices affected by Log4j vulnerabilities.

Who found Log4j vulnerability? ›

The vulnerability had existed unnoticed since 2013 and was privately disclosed to the Apache Software Foundation, of which Log4j is a project, by Chen Zhaojun of Alibaba Cloud's security team on 24 November 2021.

Which versions of Log4j are vulnerable? ›

Apache Log4j2 versions from 2.0-beta7 to 2.17. 0 (excluding security fix releases 2.3. 2 and 2.12. 4) are vulnerable to a remote code execution attack.

Which company got hacked by Log4j? ›

Cybersecurity company Akamai Technologies Inc. has tracked 10 million attempts to exploit the Log4j vulnerability per hour in the U.S. Hackers are using the vulnerability to target the retail sector more than any other, Akamai said.

Do I need to worry about Log4j? ›

Unfortunately, you should be very worried as Log4j is widely used in industrial-control-system (ICS) software.

Is Netflix affected by Log4j? ›

Here is a list of some companies indirectly affected (via the software supply chain) by this vulnerability: Google, Amazon, Tesla, CloudFlare, PayPal, Netflix, Twitter, LinkedIn, Apple, VMWare, and more. There is a very high probability that you are affected as well and not just your web applications.

Is Log4j safe to use now? ›

Recently, a serious vulnerability in the popular Java logging package, Log4j (CVE-2021-44228) was disclosed, posing a severe risk to millions of consumer products to enterprise software and web applications. This vulnerability is being widely exploited by a growing set of attackers.

How many companies use Log4j? ›

We have data on 11,083 companies that use Apache Log4j. The companies using Apache Log4j are most often found in United States and in the Information Technology and Services industry. Apache Log4j is most often used by companies with 50-200 employees and 1M-10M dollars in revenue.

Do iphones use Log4j? ›

Developed and maintained by the open-source Apache Software Foundation, Log4j can run across all major platforms including Windows, Linux, and Apple's macOS.

What is the difference between SIEM and Splunk? ›

Most people have a common question: Is Splunk a SIEM? Splunk is not a SIEM but you can use it for similar purposes. It is mainly for log management and stores the real-time data as events in the form of indexers. It helps to visualize data in the form of dashboards.

What type of tool is Splunk? ›

Splunk is a software platform widely used for monitoring, searching, analyzing and visualizing the machine-generated data in real time. It performs capturing, indexing, and correlating the real time data in a searchable container and produces graphs, alerts, dashboards and visualizations.

What problem does Splunk solve? ›

Splunk allows you to monitor many aspects of the infrastructure, from network traffic to storage, from messaging platforms to servers, from containers to databases. The Splunk implementation offers a significant decrease in Mean Time To Resolution (MTTR) and lowers monitoring costs, allowing enterprises to work better.

What is the difference between SIEM and SOC? ›

A SOC analyst is still necessary for containment and eradication of the threat, but the SIEM will analyze network traffic, potentially block access, and send an alert to a security analyst to further research into the event. Complex and advanced threats are difficult to eradicate from an environment.

How much does Splunk SIEM cost? ›

Pricing is available as a perpetual or annual term license, is based on maximum daily data ingestion, and? starts at $2,000/year for 1 GB/day. Splunk Cloud is available for monthly or annual subscription.

What can Splunk detect? ›

Splunk can provide the data platform and security analytics capabilities needed to allow organizations to monitor, alert, analyze, investigate, respond, share, and detect known and unknown threats regardless of organizational size or skillset.

Why is Splunk called Splunk? ›

When our founders set up Splunk they were rooting around in the logs of computers trying to understand why a website had crashed and getting data from different sources. They likened that to ferreting around in a cave so the name came from speleology in America it is called spelunking and we shortened that to Splunk.

What are the disadvantages of using Splunk? ›

Disadvantages of Splunk

Pricing gets a bit higher for large data volumes. The optimization of searches is more of an art than just science. Dashboard is a bit harsh as compared to tableau. It is continuously making attempts to replace it with open source alternatives.

Who is Splunk's biggest competitor? ›

With over 350,000 employees and $73.6 billion in revenues, IBM is the fiercest Splunk competitor. Both IBM and Splunk offer robust SIEM products with distinct benefits to potential buyers.

How do I turn off log4j? ›

By default, log4j logging is used for all components for which logging information is generated.
  1. To disable log4j logging, set the logging level for the component to OFF in both log4j. conf and log4j. ...
  2. To enable log4j logging, set the logging level for the component to any logging level other than OFF in both log4j.

Is splunk a soar? ›

Splunk Phantom provides security orchestration, automation and response (SOAR) capabilities that allow analysts to improve efficiency and shorten incident response times. Organizations are able to improve security and better manage risk by integrating teams, processes and tools together.

Does Tomcat use Apache Log4j? ›

Apache Tomcat. Log4j may be used as the logging framework for Apache Tomcat. This support is implemented automatically by including the log4j-api, log4j-core, and log4j-appserver jars in the boot classpath.

Does AWS use Log4j? ›

AWS Elastic Beanstalk installs Log4j from the Amazon Linux default package repositories in its Tomcat platforms for Amazon Linux 1 and Amazon Linux 2. The versions of Log4j available in the Amazon Linux 1 and Amazon Linux 2 repositories are not affected by CVE-2021-44228.

What is Splunk logging? ›

Splunk is centralized logs analysis tool for machine generated data, unstructured/structured and complex multi-line data which provides the following features such as Easy Search/Navigate, Real-Time Visibility, Historical Analytics, Reports, Alerts, Dashboards and Visualization.


1. Apache Log4j Security Vulnerabilities: What we can do?
(minor activity)
2. Fuzzing Java to Find Log4j Vulnerability - CVE-2021-45046
3. Critical Apache Log4j 2 CVE-2021-44228 | Is Docker & Docker Images Vulnerable?
4. Log4j2 vulnerability fix update DEC 2021 | log4j2 fix | log4j2 vulnerability | log4j2.17.0|okay java
(okay java)
5. Log4J2 Vulnerability Exploitation Demonstration
6. Log4j (CVE-2021-44228) RCE Vulnerability Explained
(Marcus Hutchins)

You might also like

Latest Posts

Article information

Author: Clemencia Bogisich Ret

Last Updated: 05/25/2022

Views: 5688

Rating: 5 / 5 (80 voted)

Reviews: 95% of readers found this page helpful

Author information

Name: Clemencia Bogisich Ret

Birthday: 2001-07-17

Address: Suite 794 53887 Geri Spring, West Cristentown, KY 54855

Phone: +5934435460663

Job: Central Hospitality Director

Hobby: Yoga, Electronics, Rafting, Lockpicking, Inline skating, Puzzles, scrapbook

Introduction: My name is Clemencia Bogisich Ret, I am a super, outstanding, graceful, friendly, vast, comfortable, agreeable person who loves writing and wants to share my knowledge and understanding with you.